物料名.间隙标准.攻牙底孔

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攻牙底孔径对照表

7.912
8.676
螺孔径
NO1 -64 2 -56 3 -48 4 -40 5 -40 6 -32 8 -32 10 -24 12 -24 1/4 -20 5/16 -18 3/8 -16 7/16 -14 1/2 -13 9/16 -12 5/8 -11 3/4 -10 7/8 -9 1 -8
切削丝攻（英制螺纹）
螺丝规格
钻头径
A列
B列
A列
（硬质材）（软质材）直径%
咬合率%
B列
母螺纹
母螺纹
直径% 最大内径% 最小内径%
W 1/8 3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 11/8 11/4 13/8 11/2
2.6 3.7 5.1 6.6 8.0 9.4 10.7 12.3 13.7 16.7 19.5 22.4 25.0 28.3 30.5 33.8
攻牙底孔径对照
切削丝攻（公制粗牙）
切削丝攻（美制粗牙 UNC）
挤压丝攻（公制螺纹）
螺丝规格钻头径
2级螺纹底孔径
最小尺寸最大尺寸
M 1.0×0.25
1.1×0.25 1.2×0.25 1.4×0.3 1.6×0.35 1.7×0.35 1.8×0.35 2.0×0.4 2.2×0.45 2.3×0.4 2.5×0.45 2.6×0.45 3.0×0.6 3.0×0.5 3.5×0.6 4.0×0.75 4.0×0.7 4.5×0.75 5.0×0.9 5.0×0.8 5.5×0.9 6.0×1.0 7.0×1.0 8.0×1.25
11/4 -12
2.1 2.4
2.7
2.9 3.5 4.1 4.6 5.5 6.9 8.5 9.9 11.5 12.9 14.5 17.5 20.5 23.2 26.5

底孔标准

攻牙/五金底孔明細表
名稱直攻牙
M2.5*0.45 2.2
規格 M2*0.4 M3*0.5 M4*0.7 M5*0.8 #6-32 5/32
底孔 1.6 2.6 3.6 4.6 3.1 3.2
名稱抽牙 (抽孔內徑)
規格 M2 M3 M4 M5 #6-32
底孔
有屑絲攻有屑絲攻有屑絲攻有屑絲攻
3/16 M6*1.0 M8*1.25 M10*1.5 M12*1.75
4.3 M3 5.5 M3 7.2 7.2 5.5 M2.5*0.45外經4.2(M25) 4.3 M2.5*0.45外經5.4(6M25) 5.5 六角拉帽 M8 11.0*11.0 彈簧螺絲 M10 13.0*13.0 3/8 12.8*12.8 M6 9.05*9.05 M5 7.0*7.0 M4 6.0*6.0 M3 5.0*5.0 接地螺絲 #6-32 3.6 TPS螺銷外徑6.0 6.5 六角螺帽焊接孔 (H : 代表六角螺帽) #8-32 4.2 M3 3.1 1/2UNC 13.0 M4 4.1 H-M10-ZI M10*1.5 7 2.4 1.7
配合)外經: 要求外經-2T)/2 + 系數數=0.4T(一般的差不多) UNC代表粗牙 UNF代表細牙板厚T=0.6 . 0.6)/2+0.4*0.6=1.24 以) 抽孔外經用3.2 (莎拉3.5) ~1.5 抽孔外經3.8(莎拉4.0) 4T (T>=0.8(當T<0.8時抽孔外經3.8-4.0都可(莎拉孔
4.0 5.0 6.8 8.6 10.2
直攻牙底孔=牙紋規格-牙紋大小例如:M8*1.25的那麼底孔大小為=8 -1.25=6.75(6.8)
抽孔(鉚接用的和莎拉配合)外經: 底孔＝(要求外經-2T)/2 + 系數系數=0.4T(一般的差不多) 例:要求抽孔外經3.2 板厚T=0.6 . 那麼此底孔為(3.2-2*0.6)/2+0.4*0.6=1.24 (一般1.0-1.3都可以) 抽孔鉚接：T=0.5~0.8 抽孔外經用3.2 (莎拉3.5) T=1.0~1.2~1.5 抽孔外經3.8(莎拉4.0) 鉚接抽孔外經:一般為4T (T>=0.8(當T<0.8時抽孔為3.2)) T=1.0 /1.2抽孔外經3.8-4.0都可(莎拉孔為4.0/4.2) 螺母 M3*0.5 4.3 M4*0.7 5.5 M5*0.8 6.5 M6*1.0 8.8 M8*1.25 10.5 M10*1.5 14.1 #6-32 4.8 3/8 12.7 #6-32 6.5(壓鉚) 5.8(翻邊) PF32-8-32 6.4 PF11 M5-2 8.0

螺纹攻牙底孔参数

螺纹攻牙底孔参数攻牙底孔的使用参数表一、螺紋下孔徑表1、公制粗牙螺紋JIS B 0209-1982(單位：mm)螺纹尺寸钻头直径螺纹下孔徑內螺紋小徑最小直径最大直径M1×0.25 0.75 0.78 (80%) 0.729 0.785 1.1 ×0.25 0.85 0.88 (80%) 0.829 0.885 1.2 ×0.25 0.95 0.98 (80%) 0.929 0.985 1.4 ×0.3 1.1 1.14 (80%) 1.075 1.142 1.6 ×0.35 1.25 1.32 (75%) 1.221 1.321 1.8 ×0.35 1.45 1.52 (75%) 1.421 1.521 2×0.4 1.6 1.65 (80%) 1.567 1.679 2.2 ×0.45 1.75 1.83 (75%) 1.713 1.838 2.5 ×0.45 2.1 2.13 (75%) 2.013 2.138 3×0.5 2.5 2.59 (75%) 2.459 2.599 3.5 ×0.6 2.9 3.01 (75%) 2.850 3.010 4×0.7 3.3 3.39 (80%) 3.242 3.422 4.5 ×0.75 3.8 3.85 (80%) 3.688 3.878 5×0.8 4.2 4.31 (80%) 4.134 4.334 6×15 5.13 (80%) 4.917 5.153 7×16 6.13 (80%) 5.917 6.153 8×1.25 6.86.85 (85%) 6.647 6.912 9×1.257.87.85 (85%) 7.647 7.912 10×1.58.5 8.62 (85%) 8.376 8.676 11×1.59.5 9.62 (85%) 9.376 9.676 12×1.75 10.3 10.40 (85%) 10.106 10.441 14×2 12 12.2 (85%) 11.835 12.210 16×2 14 14.2 (85%) 13.835 14.210 18×2.5 15.5 15.7 (85%) 15.294 15.744 20×2.5 17.5 17.7 (85%)17.294 17.744 22×2.5 19.5 19.2 (85%) 19.294 19.744 24×3 21 21.2 (85%) 20.752 21.252 27×3 24 24.2 (85%) 23.752 24.252 30×3.5 26.5 26.6 (90%) 26.211 26.771 33×3.5 29.5 29.6 (90%) 29.211 29.771 36×4 32 32.1 (90%) 31.670 32.270 39 ×4 35 35.1 (90%) 34.670 35.270 42 ×4.5 37.5 37.6 (90%) 37.129 37.799 45 ×4.5 40.5 40.6 (90%) 40.129 40.799 48 ×5 43 43.1 (90%) 42.587 43.297 註(1)M1.4以下等級：5H、M1.6以上等級：6H (2)基於JIS B 0209-1982標準2、公制細牙螺紋-01JIS B 0211-1982(單位：mm)螺纹尺寸钻头直径螺纹下孔徑內螺紋小徑最小直径最大直径M2.5 ×0.35 2.2 2.22 (75%) 2.121 2.221 3×0.35 2.7 2.72 (75%) 2.621 2.7213.5 ×0.35 3.2 3.22 (75%) 3.121 3.2214×0.5 3.5 3.59 (75%) 3.459 3.5994.5 ×0.5 4 4.09 (75%) 3.959 4.0995×0.5 4.5 4.59 (75%) 4.459 4.5995.5 ×0.5 5 5.09 (75%) 4.959 5.0996×0.75 5.3 5.35 (80%) 5.188 5.3787×0.75 6.3 6.35 (80%) 6.188 6.3788×1 7 7.13 (80%) 6.917 7.1538×0.75 7.3 7.35 (80%) 7.188 7.3789×1 8 8.13 (80%) 7.917 8.1539×0.75 8.3 8.35 (80%) 8.188 8.37810×1.25 8.8 8.85 (85%) 8.647 8.91210×1 9 9.13 (80%) 8.917 9.15310×0.75 9.3 9.35 (80%) 9.188 9.37811 ×1 10 10.13 (80%) 9.917 10.15311 ×0.75 10.3 10.35 (80%) 10.188 10.37812 ×1.5 10.5 10.62 (85%) 10.376 10.676 12 ×1.25 10.8 10.85 (85%) 10.647 10.912 12 ×1 11 11.13 (80%) 10.917 11.15314 ×1.5 12.5 12.62 (85%) 12.376 12.67614 ×1 13 13.13 (80%) 12.917 13.15315 ×1.5 13.5 13.62 (85%) 13.376 13.67615 ×1 14 14.13 (80%) 13.917 14.15316 ×1.5 14.5 14.62 (85%) 14.376 14.67616 ×1 15 15.13 (80%) 14.917 15.15317 ×1.5 15.5 15.62 (85%) 15.376 15.676 17 ×1 16 16.13 (80%) 15.917 16.15318 ×2 16 16.2 (85%) 15.835 16.21018 ×1.5 16.5 16.62 (85%) 16.376 16.67618 ×1 17 17.13 (80%) 16.917 17.15320 ×2 18 18.2 (85%) 17.835 18.21020 ×1.5 18.5 18.62 (85%) 18.376 18.67620 ×1 19 19.13 (80%) 18.917 19.15322 ×2 20 20.2 (85%) 19.835 20.21022 ×1.5 20.5 20.62 (85%) 20.376 20.67622 ×1 21 21.13 (80%) 20.917 21.15324 ×2 22 22.2 (85%) 21.835 22.21024 ×1.5 22.5 22.62 (85%) 22.376 22.67624 ×1 23 23.13 (80%) 22.917 23.15325 ×2 23 23.2 (85%) 22.835 23.21025 ×1.5 23.5 23.62 (85%) 23.376 23.67625 ×1 24 24.13 (80%) 23.917 24.153公制細牙螺紋-02JIS B 0211-1982(單位：mm)螺纹尺寸钻头直径螺纹下孔徑內螺紋小徑最小直径最大直径M26 ×1.5 24.5 24.62 (85%) 24.376 24.676 27 ×2 25 25.2(85%) 24.835 25.210 27 ×1.5 25.5 25.62 (85%) 25.376 25.67627 ×1 26 26.13 (80%) 25.917 26.15328 ×2 26 26.2(85%) 25.835 26.210 28 ×1.5 26.5 26.62 (85%) 26.376 26.676 28 ×1 27 27.13 (80%) 26.917 27.153 30 ×3 27 27.2 (85%) 26.752 27.252 30 ×2 28 28.2 (85%) 27.835 28.210 30 ×1.528.5 28.62 (85%) 28.376 28.676 30 ×1 29 29.13 (80%) 28.91729.153 32 ×2 30 30.2 (85%) 29.835 30.21032 ×1.5 30.5 30.62 (85%) 30.376 30.67633 ×3 30 30.2 (85%) 29.752 30.252 33 ×2 31 31.2 (85%) 30.835 31.210 33 ×1.5 31.5 31.62 (85%) 31.376 31.67635 ×1.5 33.5 33.62 (85%) 33.376 33.67636 ×3 33 33.2 (85%) 32.752 33.252 36 ×2 34 34.2 (85%) 33.835 34.210 36 ×1.5 34.5 34.62 (85%) 34.376 34.67638 ×1.5 36.5 36.62 (85%) 36.376 36.67639 ×3 36 36.2 (85%) 35.752 36.252 39 ×2 37 37.2 (85%) 36.835 37.21039 ×1.5 37.5 37.62 (85%) 37.376 37.67640 ×3 37 37.2 (85%) 36.752 37.252 40 ×2 38 38.2 (85%)37.835 38.210 40 ×1.5 38.5 38.62 (85%) 38.376 38.676 42 ×4 3838.1 (90%) 37.670 38.270 42 ×3 39 39.2 (85%) 38.752 39.252 42 ×2 40 40.2 (85%) 39.835 40.210 42 ×1.5 40.5 40.62 (85%) 40.37640.676 45 ×4 41 41.1 (90%) 40.670 41.270 45 ×3 42 42.2 (85%)41.752 42.252 45 ×2 43 43.2 (85%) 42.835 43.210 45×1.5 43.5 43.62 (85%) 43.376 43.676 48 ×4 44 44.1 (90%) 43.670 44.270 48 ×3 45 45.2 (85%) 44.752 45.252 48 ×2 46 46.2 (85%) 45.835 46.21048 ×1.5 46.5 46.62 (85%) 46.376 46.676 50 ×3 47 47.2 (85%) 46.752 47.252 50 ×2 48 48.2 (85%) 47.835 48.210 50 ×1.5 48.5 48.62 (85%) 48.376 48.676 註(1)等級：6H(2)基於JIS B 0211-1982標準3、美制粗牙螺紋(單位：mm)螺纹尺寸钻头直径2B级螺纹下孔徑內螺紋小徑最小直径最大直径NO.1 -64UNC 1.55 1.57 (65%) 1.425 1.5822 -56 1.8 1.86 (65%) 1.695 1.8713 -48 2.1 2.14 (65%) 1.941 2.1464 -40 2.3 2.36 (70%) 2.157 2.3855 -40 2.6 2.69 (70%) 2.487 2.6976 -32 2.8 2.86 (75%) 2.642 2.89510 -24 3.9 3.91 (80%) 3.683 3.96212 -24 4.5 4.57 (80%) 4.344 4.5971/4 -20 5.1 5.25 (80%) 4.979 5.257 5/16-18 6.6 6.72 (80%) 6.401 6.731 3/8 -16 8 8.15 (80%) 7.798 8.153 7/16 -14 9.4 9.50 (80%) 9.144 9.550 1/2 -13 10.8 11.0 (80%) 10.592 11.023 9/16 -12 12.2 12.3 (85%) 11.989 12.446 5/8-11 13.6 13.8 (85%) 13.38613.868 3/4-10 16.5 16.8 (80%) 16.307 16.840 7/8-9 19.5 19.6 (85%) 19.177 19.761 1 -8 22.2 22.5 (85%) 21.971 22.60611/8 -7 25 25.2 (85%) 24.638 25.349 11/4 -7 28.2 28.4 (85%) 27.813 28.524 13/8 -6 30.8 31.0 (85%) 30.353 31.115 11/2 -6 34 34.2 (85%) 33.528 34.290 13/4 -5 39.5 39.8 (85%) 38.964 39.8272 - 4 45.2 45.3 (90%) 44.679 45.593 4、美制細牙螺紋(單位：mm)螺纹尺寸钻头直径2B级螺纹下孔徑內螺紋小徑最小直径最大直径NO.0-80UNF 1.25 1.30 (65%) 1.182 1.3051 -72 1.55 1.61 (65%) 1.474 1.6122 -64 1.85 1.90 (65%) 1.756 1.9123 -56 2.1 2.17 (70%) 2.025 2.1974 -48 2.4 2.44 (70%) 2.271 2.4585 -44 2.7 2.74 (70%) 2.551 2.7406 -40 2.9 3.02 (70%) 2.820 3.0228 -36 3.5 3.59 (75%) 3.404 3.60610 -32 4.1 4.14 (80%) 3.963 4.16512 -28 4.6 4.70 (80%) 4.496 4.7241/4 -28 5.5 5.56 (80%) 5.360 5.5885/16-24 6.9 7.02 (80%) 6.782 7.0357/16-20 9.9 10.01 (80%) 9.729 10.0331/2 -20 11.5 11.60 (80%) 11.329 11.6079/16 -18 12.9 13.07 (80%) 12.751 13.0815/8 -18 14.5 14.65 (80%) 14.351 14.6813/4 -16 17.5 17.59 (85%) 17.323 17.6787/8 -14 20.5 20.6(85%) 20.270 20.6751-12 23.2 23.5(85%) 23.114 23.5711 1/8 -12 26.5 26.7(80%) 26.289 26.7461 1/4 -12 29.5 29.9(80%) 29.464 29.9211 3/8 -12 32.8 33.0(85%) 32.639 33.0961 1/2 -12 36 36.2(85%) 35.814 36.2715、英制粗牙螺紋(單位：mm)螺紋尺寸下孔徑嵌合率A列(硬材質) B列(軟材質)A列直徑B列直徑內螺紋最小徑內螺紋最大徑W 1/8 2.6 2.5 70.7 83.0 70.0 88.3 3/16 3.7 3.6 78.4 85.8 70.0 88.3 1/4 5.1 5.0 76.9 83.0 70.5 88.3 5/16 6.6 6.5 74.0 99.5 70.1 88.4 3/8 8.0 7.9 75.0 80.0 69.5 88.2 7/16 9.4 9.3 73.7 80.0 69.0 88.8 1/2 10.7 10.5 73.8 81.2 69.0 88.2 9/16 12.3 12.0 73.4 84.4 69.0 88.2 5/8 13.7 13.5 73.5 80.3 69.6 88.5 3/4 16.7 16.5 72.3 78.469.6 88.3 7/8 19.5 19.3 75.4 80.9 70.1 88.4 1 22.4 22.0 73.8 83.6 71.0 88.2 1 1/8 25.0 24.8 76.9 81.3 72.0 88.4 1 1/4 28.3 28.0 74.3 80.7 72.0 88.4 1 3/8 30.5 30.3 81.6 85.3 73.8 88.6 1 1/2 33.8 33.5 79.3 84.8 73.8 88.6 1 5/8 36.0 35.7 81.1 85.7 74.8 88.3 1 3/4 39.2 39.0 80.7 83.8 74.8 88.31 7/8 41.8 41.5 80.6 84.7 74.7 88.42 45.0 44.7 80.2 84.4 74.7 88.46、英制管用螺紋(單位：mm)管用螺紋尺寸JIS B 0203JIS B 2301錐管內螺紋Rc(PT) 平行內螺紋Rp(PS) 錐管內螺紋計算值下孔徑計算值下孔徑計算值下孔徑1/16 6.230 6.2 6.490 6.5 －－1/8 8.235 8.2 8.495 8.5 8.191 8.2 1/4 10.941 10.9 11.341 11.4 10.945 10.9 3/8 14.428 14.4 14.846 14.9 14.388 14.4 1/2 17.950 18 18.489 18.5 17.943 18 3/4 23.349 23 23.975 24 23.305 23 1 29.423 29 30.111 30 29.353 29 1 1/4 37.940 38 38.772 39 37.890 381 1/2 43.833 44 44.565 45 43.720 432 55.412 55 56.476 56 55.406 552 1/2 70.701 71 72.009 72 70.788 703 83.201 83 84.709 85 83.364 833 1/2 95.547 96 97.155 97 95.747 954 107.834 108 109.855 110 108.322 1085 133.110 133 135.255 135 133.597 1336 158.510 159 160.655 161 158.810 1587 183.360 183 185.954 1868 208.560 209 211.354 2129 233.960 234 236.754 23710 259.166 259 262.154 26212 309.747 310 312.875 3137、美制管用耐密斜行螺紋(NPTF?NPSF) (單位：mm)管用螺紋尺寸斜行螺紋(NPTF)平行螺紋(NPSF)鑽頭直徑鑽頭直徑使用鉸刀場合不使用鉸刀場合1/16 －0.234 ( 5.94) 0.246 ( 6.25) 1/4 0.250 ( 6.35)1/8 21/64 0.328 ( 8.33) 0.339 ( 8.61) 11/32 0.344 ( 8.74)1/4 27/64 0.422 (10.72) 7/16 0.438 (11.13) －0.444 (11.28)3/8 9/16 0.562 (14.27) 37/64 0.578 (14.68) 37/64 0.578 (14.68) 1/2 11/16 0.688 (17.48) 45/64 0.703 (17.86) 23/32 0.719 (18.26)3/4 57/64 0.891 (22.63) 59/64 0.922 (23.42) －0.922 (23.42)1 1 1/8 1.125 (28.58) 15/321.156 (29.36) 1 5/32 1.156 (29.36)1 1/4 1 15/32 1.469 (37.31) 11/21.500 (38.10) －－1 1/2 1 45/64 1.703 (43.26) 147/641.734 (44.04) －－2 2 3/16 2.188 (55.58) 27/322.219 (56.36) －－2 1/2 2 19/32 2.594 (65.89) 241/642.641 (67.08) －－上述鑽頭直徑來源於美制管用耐密斜行螺紋ANSI B1.20.3—1957 Dryseal Pipe Threads (Inch)標準8、公制螺紋(NRT) (單位：mm)螺紋尺寸1級螺紋用下孔徑2級螺紋用下孔徑RH 精度最小～最大(嵌合率％)RH精度最小～最大(嵌合率％)M 1×0.25 2 0.87 ~ 0.89(100~85) 4 0.90 ~0.92 (100~80)1.1×0.25 2 0.97 ~ 0.99(100~85) 4 1.00 ~1.02 (100~80) 1.2×0.252 1.07 ~ 1.09(100~85) 4 1.10 ~1.12 (100~80) 1.4×0.3 2 1.244~ 1.263(100~85)4 1.270~1.294 (100~80)1.7×0.35 2 1.51 ~ 1.54(100~80) 4 1.54 ~ 1.58 (100~75)2 ×0.4 2 1.78 ~ 1.82(100~80) 4 1.81 ~ 1.85 (100~75) 2.3×0.4 2 2.08 ~ 2.12(100~80) 4 2.11 ~ 2.15 (100~75) 2.5×0.45 2 2.25 ~2.29(100~80) 4 2.28 ~ 2.33 (100~75)2.6×0.45 2 2.35 ~ 2.39(100~80) 4 2.38 ~ 2.43 (100~75)3 ×0.5 3 2.74 ~ 2.78(100~80)5 2.76 ~ 2.81 (100~75)3.5×0.6 3 3.18 ~ 3.21(100~85) 5 3.20 ~ 3.26 (100~75)4 ×0.7 4 3.63 ~ 3.67(100~85) 6 3.65 ~ 3.70 (100~85)5 ×0.8 4 4.57 ~ 4.62(100~85)6 4.59 ~ 4.66 (100~80)6 ×1 4 5.45 ~ 5.51(100~85)7 5.48 ~ 5.57 (100~80)7 ×1 4 6.45 ~ 6.51(100~85) 7 6.48 ~ 6.57 (100~80)8 ×1.25 5 7.31 ~ 7.38(100~85) 7 7.34 ~ 7.41 (100~85) 8 ×1 4 7.45 ~ 7.51(100~85) 7 7.48 ~ 7.57 (100~80) 10 ×1.5 5 9.16 ~ 9.22(100~90) 7 9.18 ~ 9.28 (100~85) 10 ×1.25 5 9.31 ~ 9.38(100~85) 7 9.34 ~ 9.41 (100~85) 10 ×1 5 9.46 ~ 9.52(100~85) 7 9.48 ~ 9.57 (100~80)12 ×1.75 5 11.01 ~11.08(100~90) 8 11.05 ~11.15(100~85)12 ×1.5 5 11.16 ~11.22(100~90) 7 11.18 ~11.28(100~85)12 ×1.25 5 11.31 ~11.38(100~85) 7 11.34 ~11.41(100~85)12 ×1 5 11.46 ~11.52(100~85) 7 11.48 ~11.57(100~80)14 ×2 6 12.83 ~12.95(100~90) 10 12.92 ~13.04(100~85)14 ×1.5 5 13.16 ~13.22(100~90) 9 13.21 ~13.30(100~85)16 ×2 6 14.87 ~14.95(100~90) 10 14.92 ~15.04(100~85)16 ×1.5 5 15.16 ~15.22(100~90) 9 15.21 ~15.30(100~80)18 ×2.5 6 16.57 ~16.67(100~90) 11 16.63 ~16.78(100~85)18 ×1.5 6 17.17 ~17.23(100~90) 10 17.22 ~17.31(100~85)20 ×2.5 6 18.57 ~18.67(100~90) 11 18.63 ~18.78(100~85)20 ×1.5 6 19.17 ~19.23(100~90) 10 19.22 ~19.31(100~85)9、美制粗牙螺紋(NRT) (單位：mm)螺紋尺寸2B級螺紋用下孔徑3B級螺紋用下孔徑RH 精度最小～最大(嵌合率％)RH精度最小～最大(嵌合率％)NO.2-56UNC 4 1.96 ~ 2.02 (100~65) 3 1.95 ~ 2.01 (100~65) 3-48 4 2.25 ~ 2.32 (100~65) 3 2.23 ~ 2.31 (100~65) 4-40 5 2.52 ~ 2.60 (100~70) 3 2.50 ~ 2.58 (100~70) 5-40 5 2.86 ~ 2.93 (100~70) 3 2.83 ~ 2.91 (100~70) 6-32 5 3.09 ~ 3.17 (100~75) 3 3.06 ~ 3.14 (100~75) 8-32 6 3.75 ~ 3.83 (100~75) 4 3.74 ~ 3.82 (100~75) 10-24 6 4.26 ~ 4.35 (100~80) 4 4.24 ~ 4.32 (100~80) 12-24 6 4.92 ~ 5.01 (100~80) 4 4.90 ~ 4.96 (100~85) 1/4 -20 6 5.66 ~ 5.76 (100~80) 4 5.64 ~ 5.74 (100~80) 5/16 -18 7 7.18 ~7.29 (100~80) 5 7.15 ~7.24 (100~85) 3/8 -16 7 8.66 ~8.78 (100~80) 5 8.63 ~8.73 (100~85)7/16 -14 7 10.11 ~10.25(100~80) 5 10.08 ~10.19 (100~85)1/2 -13 8 10.62 ~11.78(100~80) 6 11.60 ~11.68 (100~90)9/16 -12 10 13.14 ~13.27(100~85) 8 13.11 ~13.24 (100~85)5/8 -11 11 14.62 ~14.76(100~85) 8 14.58 ~14.67 (100~90)3/4 -10 12 17.67 ~17.88(100~80) 9 17.63 ~17.74 (100~90)7/8 - 9 12 20.68 ~20.85(100~85) 9 20.64 ~20.75 (100~90)1 - 8 13 23.65 ~23.84(100~85) 10 23.61 ~23.74 (100~90)二、螺紋下孔徑表(無屑絲攻用)1、美制細牙螺紋(NRT) (單位：mm)螺紋尺寸2B級螺紋用下孔徑3B級螺紋用下孔徑RH 精度最小～最大(嵌合率％)RH精度最小～最大(嵌合率％)NO.2-64UNF 3 1.98 ~ 2.04 (100~65) 2 1.97 ~ 2.03 (100~65) 3-56 4 2.29 ~ 2.35 (100~65) 3 2.28 ~ 2.34 (100~65)4-48 4 2.57 ~ 2.64 (100~70) 3 2.56 ~ 2.63 (100~70)5-44 4 2.88 ~ 2.95 (100~70) 3 2.87 ~ 2.94 (100~70)6-40 5 3.19 ~ 3.26 (100~70) 3 3.16 ~ 3.22 (100~75)8-36 5 3.80 ~ 3.88 (100~75) 4 3.79 ~ 3.86 (100~75) 10-32 5 4.41 ~ 4.48 (100~80) 4 4.40 ~ 4.46 (100~80) 12-28 5 5.00 ~ 5.08 (100~80) 4 4.99 ~ 5.06 (100~80) 1/4-28 5 5.86 ~ 5.93 (100~80) 4 5.85 ~ 5.92 (100~80) 5/16-24 6 7.38 ~7.46 (100~80) 5 7.36 ~7.43 (100~85) 3/8 -24 6 8.96 ~9.05 (100~80) 5 8.95 ~9.02 (100~85) 7/16-20 7 10.44 ~10.54 (100~80) 5 10.41 ~10.49 (100~85) 1/2-20 7 12.02 ~12.12 (100~80) 5 12.00 ~12.05 (100~90) 9/16-18 9 13.55 ~13.66 (100~80) 7 13.53 ~13.58 (100~90) 5/8 -18 9 15.14 ~15.25 (100~80) 7 15.11 ~15.17 (100~90) 3/4 -16 10 18.22 ~18.32 (100~85) 7 18.18 ~18.25 (100~90) 7/8 -14 11 21.27 ~21.38 (100~85) 8 21.23 ~21.27 (100~95)1 - 12 12 24.28 ~24.41 (100~85) 9 24.24 ~24.32 (100~90)2、英制管用平行螺紋(NRT) (單位：mm)螺紋尺寸RH精度最小～最大(嵌合率％)PF 1/8 6 9.24~9.35 (100~80)1/4 7 12.41~12.62 (100~75)3/8 7 15.92~16.12 (100~75)1/2 8 19.93~20.15 (100~80)3/4 8 25.41~25.64 (100~80)3、公制螺紋(HRT) (單位：mm)螺紋尺寸1級螺紋用下孔徑2級螺紋用下孔徑RH 精度最小～最大(嵌合率％)RH精度最小～最大(嵌合率％)M 1×0.25 2 0.858~0.879(100~85)4 0.858~0.887 (100~80)1.2×0.25 2 1.058~1.079(100~85)4 1.058~1.087 (100~80) 1.4×0.3 2 1.23 ~1.26 (100~85) 4 1.23 ~1.26 (100~80) 1.6×0.35 2 1.40 ~1.44 (100~80) 4 1.40 ~1.45 (100~75) 1.7×0.35 －1.50 ~1.54 (100~80) 4 1.50 ~1.55 (100~75)1.8×0.35 2 1.60 ~1.64 (100~80) 4 1.60 ~1.65 (100~75)2 ×0.4 2 1.77 ~1.82 (100~80) 4 1.77 ~1.82 (100~80) 2 ×0.25 2 1.858~1.887(100~80)－1.858~1.887 (100~80) 2.3×0.4 － 2.07 ~2.12 (100~80) 4 2.07 ~2.13 (100~75) 2.5×0.45 3 2.24 ~2.30 (100~80) 5 2.24 ~2.31 (100~75)2.6×0.45 － 2.34 ~2.40 (100~80) 5 2.34 ~2.41 (100~75)3 ×0.6 3 2.72 ~2.73 (100~90) 5 2.66 ~2.73 (100~90) 3 ×0.5 52.72 ~2.77 (100~80) 6 2.72 ~2.78 (100~75)3 ×0.35 3 2.80 ~2.84 (100~80)5 2.80 ~2.85 (100~75)3.5×0.6 3 3.16 ~3.21 (100~85) 5 3.16 ~3.25 (100~75)4 ×0.75 3 3.57 ~3.64 (100~85)6 3.57 ~3.64 (100~85) 4 ×0.7 6 3.60 ~3.66 (100~85) 7 3.60 ~3.66 (100~85)4 ×0.5 3 3.71 ~3.77 (100~80)6 3.71 ~3.79 (100~75)5 ×0.9 3 4.49 ~4.59 (100~85) 7 4.49 ~4.59 (100~85) 5 ×0.8 34.55 ~4.62 (100~85) 8 4.55 ~4.64 (100~80)5 ×0.5 3 2.72 ~4.77 (100~80)6 4.72 ~4.79 (100~75)6 ×1 4 5.43 ~5.52 (100~85)7 5.43 ~5.55 (100~80) 6 ×0.75 3 5.57 ~5.64 (100~85) 7 5.57 ~5.66 (100~80)4、公制粗牙螺紋HL-NRT (單位：mm)螺紋尺寸RH精度最小～最大(嵌合率％) M 3 ×0.5 3 3.39~3.43 (100~80)4 ×0.7 4 4.54~4.58 (100~85)5 ×0.8 4 5.61~5.66 (100~85)6 ×1 4 6.75~6.81 (100~85) 8 ×1.25 5 8.93~9.01 (100~85) 10 ×1.5 5 11.11~11.17 (100~90) 10 ×1.25 5 10.93~11.01 (100~85) 12 ×1.75 5 13.28~13.17 (100~90) 12 ×1.5 5 13.11~13.17 (100~90) 12 ×1.255 12.93~13.01 (100~85)三、螺紋下孔徑表(護套螺紋用)螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑M 2.5×0.45 2.60 2.65 2.62.6×0.45 2.70 2.75 2.73 ×0.5 3.12 3.20 3.14 ×0.7 4.17 4.30 4.25 ×0.8 5.16 5.33 5.26 ×1 6.25 6.42 6.3 8 ×1.25 8.31 8.52 8.4 10 ×1.5 10.37 10.62 10.5 12 ×1.75 12.43 12.73 12.514 ×2 14.49 14.83 14.5 16 ×2 16.49 16.83 16.5 18 ×2.5 18.58 19.04 19.0 20 ×2.5 20.58 21.04 21.0 22 ×2.5 22.58 23.04 23.0 24 ×2.5 24.70 25.25 25.02、公制細牙螺紋(單位：mm)螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑M 10 ×1 10.25 10.42 10.310 ×1.25 10.31 10.52 10.412 ×1.25 12.31 12.52 12.512 ×1.5 12.37 12.62 12.514 ×1.5 14.37 14.62 14.516 ×1.5 16.37 16.62 16.518 ×1.5 18.37 18.62 18.520 ×1.5 20.37 20.62 20.520 ×2 20.47 20.83 20.522 ×1.5 22.37 22.62 22.524 ×1.5 24.37 24.62 24.524 ×2 24.47 24.83 24.530 ×1.5 30.37 30.62 30.5螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑NO. 2 –56UNC 2.29 2.39 2.33 –48 2.64 2.74 2.74 –40 2.95 3.07 3.05 –40 3.25 3.38 3.36 –32 3.66 3.81 3.78 –32 4.32 4.47 4.410 –24 5.05 5.21 5.112 –24 5.61 5.77 5.71/4 –20 6.63 6.78 6.75/16 –8 8.33 8.48 8.43/8 –16 9.91 10.11 10.07/16–14 11.51 11.76 11.51/2 –13 13.08 13.34 13.19/16–12 14.68 14.94 14.74、美制細牙螺紋(單位：mm)螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑NO. 4 –48UNF 2.97 3.05 3.06 –40 3.66 3.78 3.78 –36 4.32 4.44 4.410 –32 4.98 5.13 5.01/4 –28 6.53 6.71 6.6 5/16 –24 8.20 8.38 8.23/8 –24 9.78 9.96 9.8 7/16 –20 11.43 11.63 11.51/2 –20 13.03 13.26 13.1 9/16 –18 14.66 14.88 14.7 5/8 –18 16.26 16.48 16.33/4 –16 19.43 19.68 19.57/8 –14 22.61 22.86 22.71 –12 25.76 26.04 26.0各種換算表管用螺絲基準寸法(mm)規格英制JIS(PT)美式ASA(NPT)山數外徑有效徑山數外徑有效徑1/167.723277.777.142 1/8289.7289.1472710.1169.4891/41913.15712.3011813.42712.4873/81916.66215.8061816.86615.9261/21420.95519.7931420.98019.7723/41426.44125.2791426.32625.11711133.24931.770111/233.93231.46111/41141.91040.431111/241.68940.21811/21147.80346.324111/247.68946.28721159.61458.135111/259.79658.32521/21175.18473.705872.27370.15931187.88486.405888.18286.06831/211100.33098.8518100.69198.776411113.030111.5518113.548111.433 41/211125.730124.251 511138.430136.9518141.3138.412 51/211151.130149.651611163.830162.3518168.3165.252 711189.230187.751811214.630213.1518219.1215.901美制螺絲外徑公厘(mm)換算表規格吋mmNO.00.0600 1.52410.0730 1.85420.0860 2.18430.0990 2.51540.1120 2.84550.1250 3.17560.1380 3.50580.1640 4.166100.1900 4.826120.2160 5.486山數節距換算表山數(每25.4mm) 節距mm100 0.254080 0.317572 0.352864 0.3969 60 0.4233 56 0.4536 48 0.5292 44 0.5773 40 0.6350 36 0.7056 32 0.7938 28 0.9071 24 1.0583 20 1.2700 18 1.4111 16 1.5875 14 1.8143 13 1.9538 12 2.1167 11 2.3091 10 2.54009 2.82228 3.17507 3.62866 4.23335 5.0800 4 1/2 5.64444 6.3500 3 1/2 7.2571 3 1/4 7.81543 8.4667 2 7/8 8.8348 2 3/4 9.2364 2 5/8 9.6762 2 1/2 10.1600。

攻牙底孔参数

攻牙底孔的使用参数表一、螺紋下孔徑表1、公制粗牙螺紋JIS B 0209-1982(單位：mm)螺纹尺寸钻头直径螺纹下孔徑內螺紋小徑最小直径最大直径M1×0.25 0.75 0.78 (80%) 0.729 0.7851.1 ×0.25 0.85 0.88 (80%) 0.829 0.8851.2 ×0.25 0.95 0.98 (80%) 0.929 0.9851.4 ×0.3 1.1 1.14 (80%) 1.075 1.1421.6 ×0.35 1.25 1.32 (75%) 1.221 1.3211.8 ×0.35 1.45 1.52 (75%) 1.421 1.5212×0.4 1.6 1.65 (80%) 1.567 1.6792.2 ×0.45 1.75 1.83 (75%) 1.713 1.8382.5 ×0.45 2.1 2.13 (75%) 2.013 2.1383×0.5 2.5 2.59 (75%) 2.459 2.5993.5 ×0.6 2.9 3.01 (75%) 2.850 3.0104×0.7 3.3 3.39 (80%) 3.242 3.4224.5 ×0.75 3.8 3.85 (80%) 3.688 3.8785×0.8 4.2 4.31 (80%) 4.134 4.3346×1 5 5.13 (80%) 4.917 5.1537×1 6 6.13 (80%) 5.917 6.1538×1.25 6.8 6.85 (85%) 6.647 6.9129×1.25 7.8 7.85 (85%) 7.647 7.91210×1.5 8.5 8.62 (85%) 8.376 8.67611×1.5 9.5 9.62 (85%) 9.376 9.67612×1.75 10.3 10.40 (85%) 10.106 10.44114×2 12 12.2 (85%) 11.835 12.21016×2 14 14.2 (85%) 13.835 14.21018×2.5 15.5 15.7 (85%) 15.294 15.74420×2.5 17.5 17.7 (85%) 17.294 17.74422×2.5 19.5 19.2 (85%) 19.294 19.74424×3 21 21.2 (85%) 20.752 21.25227×3 24 24.2 (85%) 23.752 24.25230×3.5 26.5 26.6 (90%) 26.211 26.77133×3.5 29.5 29.6 (90%) 29.211 29.77136×4 32 32.1 (90%) 31.670 32.27039 ×4 35 35.1 (90%) 34.670 35.27042 ×4.5 37.5 37.6 (90%) 37.129 37.79945 ×4.5 40.5 40.6 (90%) 40.129 40.79948 ×5 43 43.1 (90%) 42.587 43.297註(1)M1.4以下等級：5H、M1.6以上等級：6H (2)基於JIS B 0209-1982標準2、公制細牙螺紋-01JIS B 0211-1982(單位：mm)螺纹尺寸钻头直径螺纹下孔徑內螺紋小徑最小直径最大直径M2.5 ×0.35 2.2 2.22 (75%) 2.121 2.2213×0.35 2.7 2.72 (75%) 2.621 2.7213.5 ×0.35 3.2 3.22 (75%) 3.121 3.2214×0.5 3.5 3.59 (75%) 3.459 3.5994.5 ×0.5 4 4.09 (75%) 3.959 4.0995×0.5 4.5 4.59 (75%) 4.459 4.5995.5 ×0.5 5 5.09 (75%) 4.959 5.0996×0.75 5.3 5.35 (80%) 5.188 5.3787×0.75 6.3 6.35 (80%) 6.188 6.3788×1 7 7.13 (80%) 6.917 7.1538×0.75 7.3 7.35 (80%) 7.188 7.3789×1 8 8.13 (80%) 7.917 8.1539×0.75 8.3 8.35 (80%) 8.188 8.37810×1.25 8.8 8.85 (85%) 8.647 8.91210×1 9 9.13 (80%) 8.917 9.15310×0.75 9.3 9.35 (80%) 9.188 9.37811 ×1 10 10.13 (80%) 9.917 10.15311 ×0.75 10.3 10.35 (80%) 10.188 10.37812 ×1.5 10.5 10.62 (85%) 10.376 10.67612 ×1.25 10.8 10.85 (85%) 10.647 10.91212 ×1 11 11.13 (80%) 10.917 11.15314 ×1.5 12.5 12.62 (85%) 12.376 12.67614 ×1 13 13.13 (80%) 12.917 13.15315 ×1.5 13.5 13.62 (85%) 13.376 13.67615 ×1 14 14.13 (80%) 13.917 14.15316 ×1.5 14.5 14.62 (85%) 14.376 14.67616 ×1 15 15.13 (80%) 14.917 15.15317 ×1.5 15.5 15.62 (85%) 15.376 15.67617 ×1 16 16.13 (80%) 15.917 16.15318 ×2 16 16.2 (85%) 15.835 16.21018 ×1.5 16.5 16.62 (85%) 16.376 16.67618 ×1 17 17.13 (80%) 16.917 17.15320 ×2 18 18.2 (85%) 17.835 18.21020 ×1.5 18.5 18.62 (85%) 18.376 18.67620 ×1 19 19.13 (80%) 18.917 19.15322 ×2 20 20.2 (85%) 19.835 20.21022 ×1.5 20.5 20.62 (85%) 20.376 20.67622 ×1 21 21.13 (80%) 20.917 21.15324 ×2 22 22.2 (85%) 21.835 22.21024 ×1.5 22.5 22.62 (85%) 22.376 22.67624 ×1 23 23.13 (80%) 22.917 23.15325 ×2 23 23.2 (85%) 22.835 23.21025 ×1.5 23.5 23.62 (85%) 23.376 23.67625 ×1 24 24.13 (80%) 23.917 24.153公制細牙螺紋-02JIS B 0211-1982(單位：mm)螺纹尺寸钻头直径螺纹下孔徑內螺紋小徑最小直径最大直径M26 ×1.5 24.5 24.62 (85%) 24.376 24.67627 ×2 25 25.2(85%) 24.835 25.21027 ×1.5 25.5 25.62 (85%) 25.376 25.67627 ×1 26 26.13 (80%) 25.917 26.15328 ×2 26 26.2(85%) 25.835 26.21028 ×1.5 26.5 26.62 (85%) 26.376 26.67628 ×1 27 27.13 (80%) 26.917 27.15330 ×3 27 27.2 (85%) 26.752 27.25230 ×2 28 28.2 (85%) 27.835 28.21030 ×1.5 28.5 28.62 (85%) 28.376 28.67630 ×1 29 29.13 (80%) 28.917 29.15332 ×2 30 30.2 (85%) 29.835 30.21032 ×1.5 30.5 30.62 (85%) 30.376 30.67633 ×3 30 30.2 (85%) 29.752 30.25233 ×2 31 31.2 (85%) 30.835 31.21033 ×1.5 31.5 31.62 (85%) 31.376 31.67635 ×1.5 33.5 33.62 (85%) 33.376 33.67636 ×3 33 33.2 (85%) 32.752 33.25236 ×2 34 34.2 (85%) 33.835 34.21036 ×1.5 34.5 34.62 (85%) 34.376 34.67638 ×1.5 36.5 36.62 (85%) 36.376 36.67639 ×3 36 36.2 (85%) 35.752 36.25239 ×2 37 37.2 (85%) 36.835 37.21039 ×1.5 37.5 37.62 (85%) 37.376 37.67640 ×3 37 37.2 (85%) 36.752 37.25240 ×2 38 38.2 (85%) 37.835 38.21040 ×1.5 38.5 38.62 (85%) 38.376 38.67642 ×4 38 38.1 (90%) 37.670 38.27042 ×3 39 39.2 (85%) 38.752 39.25242 ×2 40 40.2 (85%) 39.835 40.21042 ×1.5 40.5 40.62 (85%) 40.376 40.67645 ×4 41 41.1 (90%) 40.670 41.27045 ×3 42 42.2 (85%) 41.752 42.25245 ×2 43 43.2 (85%) 42.835 43.21045 ×1.5 43.5 43.62 (85%) 43.376 43.67648 ×4 44 44.1 (90%) 43.670 44.27048 ×3 45 45.2 (85%) 44.752 45.25248 ×2 46 46.2 (85%) 45.835 46.21048 ×1.5 46.5 46.62 (85%) 46.376 46.67650 ×3 47 47.2 (85%) 46.752 47.25250 ×2 48 48.2 (85%) 47.835 48.21050 ×1.5 48.5 48.62 (85%) 48.376 48.676註(1)等級：6H(2)基於JIS B 0211-1982標準3、美制粗牙螺紋(單位：mm)螺纹尺寸钻头直径2B级螺纹下孔徑內螺紋小徑最小直径最大直径NO.1 -64UNC 1.55 1.57 (65%) 1.425 1.5822 -56 1.8 1.86 (65%) 1.695 1.8713 -48 2.1 2.14 (65%) 1.941 2.1464 -40 2.3 2.36 (70%) 2.157 2.3855 -40 2.6 2.69 (70%) 2.487 2.6976 -32 2.8 2.86 (75%) 2.642 2.8958 -32 3.4 3.52 (75%) 3.302 3.53010 -24 3.9 3.91 (80%) 3.683 3.96212 -24 4.5 4.57 (80%) 4.344 4.5971/4 -20 5.1 5.25 (80%) 4.979 5.2575/16-18 6.6 6.72 (80%) 6.401 6.7313/8 -16 8 8.15 (80%) 7.798 8.1537/16 -14 9.4 9.50 (80%) 9.144 9.5501/2 -13 10.8 11.0 (80%) 10.592 11.0239/16 -12 12.2 12.3 (85%) 11.989 12.4465/8-11 13.6 13.8 (85%) 13.386 13.8683/4-10 16.5 16.8 (80%) 16.307 16.8407/8-9 19.5 19.6 (85%) 19.177 19.7611 -8 22.2 22.5 (85%) 21.971 22.60611/8 -7 25 25.2 (85%) 24.638 25.34911/4 -7 28.2 28.4 (85%) 27.813 28.52413/8 -6 30.8 31.0 (85%) 30.353 31.11511/2 -6 34 34.2 (85%) 33.528 34.29013/4 -5 39.5 39.8 (85%) 38.964 39.8272 - 4 45.2 45.3 (90%) 44.679 45.5934、美制細牙螺紋(單位：mm)螺纹尺寸钻头2B级螺纹下孔徑內螺紋小徑直径最小直径最大直径NO.0-80UNF 1.25 1.30 (65%) 1.182 1.3051 -72 1.55 1.61 (65%) 1.474 1.6122 -64 1.85 1.90 (65%) 1.756 1.9123 -56 2.1 2.17 (70%) 2.025 2.1974 -48 2.4 2.44 (70%) 2.271 2.4585 -44 2.7 2.74 (70%) 2.551 2.7406 -40 2.9 3.02 (70%) 2.820 3.0228 -36 3.5 3.59 (75%) 3.404 3.60610 -32 4.1 4.14 (80%) 3.963 4.16512 -28 4.6 4.70 (80%) 4.496 4.7241/4 -28 5.5 5.56 (80%) 5.360 5.5885/16-24 6.9 7.02 (80%) 6.782 7.0353/8 -24 8.5 8.61 (80%) 8.382 8.6367/16-20 9.9 10.01 (80%) 9.729 10.0331/2 -20 11.5 11.60 (80%) 11.329 11.6079/16 -18 12.9 13.07 (80%) 12.751 13.0815/8 -18 14.5 14.65 (80%) 14.351 14.6813/4 -16 17.5 17.59 (85%) 17.323 17.6787/8 -14 20.5 20.6(85%) 20.270 20.6751-12 23.2 23.5(85%) 23.114 23.5711 1/8 -12 26.5 26.7(80%) 26.289 26.7461 1/4 -12 29.5 29.9(80%) 29.464 29.9211 3/8 -12 32.8 33.0(85%) 32.639 33.0961 1/2 -12 36 36.2(85%) 35.814 36.2715、英制粗牙螺紋(單位：mm)螺紋尺寸下孔徑嵌合率A列(硬材質) B列(軟材質)A列直徑B列直徑內螺紋最小徑內螺紋最大徑W 1/8 2.6 2.5 70.7 83.0 70.0 88.3 3/16 3.7 3.6 78.4 85.8 70.0 88.3 1/4 5.1 5.0 76.9 83.0 70.5 88.3 5/16 6.6 6.5 74.0 99.5 70.1 88.4 3/8 8.0 7.9 75.0 80.0 69.5 88.2 7/16 9.4 9.3 73.7 80.0 69.0 88.8 1/2 10.7 10.5 73.8 81.2 69.0 88.2 9/16 12.3 12.0 73.4 84.4 69.0 88.2 5/8 13.7 13.5 73.5 80.3 69.6 88.5 3/4 16.7 16.5 72.3 78.4 69.6 88.3 7/8 19.5 19.3 75.4 80.9 70.1 88.41 22.4 22.0 73.8 83.6 71.0 88.2 1 1/8 25.0 24.8 76.9 81.3 72.0 88.4 1 1/4 28.3 28.0 74.3 80.7 72.0 88.4 1 3/8 30.5 30.3 81.6 85.3 73.8 88.6 1 1/2 33.8 33.5 79.3 84.8 73.8 88.6 1 5/8 36.0 35.7 81.1 85.7 74.8 88.3 1 3/4 39.2 39.0 80.7 83.8 74.8 88.31 7/8 41.8 41.5 80.6 84.7 74.7 88.42 45.0 44.7 80.2 84.4 74.7 88.46、英制管用螺紋(單位：mm)管用螺紋尺寸JIS B 0203JIS B 2301錐管內螺紋Rc(PT) 平行內螺紋Rp(PS) 錐管內螺紋計算值下孔徑計算值下孔徑計算值下孔徑1/16 6.230 6.2 6.490 6.5 －－1/8 8.235 8.2 8.495 8.5 8.191 8.21/4 10.941 10.9 11.341 11.4 10.945 10.9 3/8 14.428 14.4 14.846 14.9 14.388 14.4 1/2 17.950 18 18.489 18.5 17.943 183/4 23.349 23 23.975 24 23.305 231 29.423 29 30.111 30 29.353 291 1/4 37.940 38 38.772 39 37.890 381 1/2 43.833 44 44.565 45 43.720 432 55.412 55 56.476 56 55.406 552 1/2 70.701 71 72.009 72 70.788 703 83.201 83 84.709 85 83.364 833 1/2 95.547 96 97.155 97 95.747 954 107.834 108 109.855 110 108.322 1085 133.110 133 135.255 135 133.597 1336 158.510 159 160.655 161 158.810 1587 183.360 183 185.954 1868 208.560 209 211.354 2129 233.960 234 236.754 23710 259.166 259 262.154 26212 309.747 310 312.875 3137、美制管用耐密斜行螺紋(NPTF‧NPSF) (單位：mm)管用螺紋尺寸斜行螺紋(NPTF)平行螺紋(NPSF)鑽頭直徑鑽頭直徑使用鉸刀場合不使用鉸刀場合1/16 －0.234 ( 5.94) 0.246 ( 6.25) 1/4 0.250 ( 6.35) 1/8 21/64 0.328 ( 8.33) 0.339 ( 8.61) 11/32 0.344 ( 8.74) 1/4 27/64 0.422 (10.72) 7/16 0.438 (11.13) －0.444 (11.28) 3/8 9/16 0.562 (14.27) 37/64 0.578 (14.68) 37/64 0.578 (14.68) 1/2 11/16 0.688 (17.48) 45/64 0.703 (17.86) 23/32 0.719 (18.26) 3/4 57/64 0.891 (22.63) 59/64 0.922 (23.42) －0.922 (23.42) 1 1 1/8 1.125 (28.58) 15/321.156 (29.36) 1 5/32 1.156 (29.36) 1 1/4 1 15/32 1.469 (37.31) 11/21.500 (38.10) －－1 1/2 1 45/64 1.703 (43.26) 147/641.734 (44.04) －－2 2 3/16 2.188 (55.58) 27/322.219 (56.36) －－2 1/2 2 19/32 2.594 (65.89) 241/642.641 (67.08) －－上述鑽頭直徑來源於美制管用耐密斜行螺紋ANSI B1.20.3—1957 Dryseal Pipe Threads (Inch)標準8、公制螺紋(NRT) (單位：mm)螺紋尺寸1級螺紋用下孔徑2級螺紋用下孔徑RH 精度最小～最大(嵌合率％)RH精度最小～最大(嵌合率％)M 1×0.25 2 0.87 ~ 0.89(100~85) 4 0.90 ~0.92 (100~80) 1.1×0.25 2 0.97 ~ 0.99(100~85) 4 1.00 ~1.02 (100~80) 1.2×0.25 2 1.07 ~ 1.09(100~85) 4 1.10 ~1.12 (100~80) 1.4×0.3 2 1.244~ 1.263(100~85)4 1.270~1.294 (100~80)1.7×0.35 2 1.51 ~ 1.54(100~80) 4 1.54 ~ 1.58 (100~75)2 ×0.4 2 1.78 ~ 1.82(100~80) 4 1.81 ~ 1.85 (100~75) 2.3×0.4 2 2.08 ~ 2.12(100~80) 4 2.11 ~ 2.15 (100~75) 2.5×0.45 2 2.25 ~ 2.29(100~80) 4 2.28 ~ 2.33 (100~75)2.6×0.45 2 2.35 ~ 2.39(100~80) 4 2.38 ~ 2.43 (100~75)3 ×0.5 3 2.74 ~ 2.78(100~80)5 2.76 ~ 2.81 (100~75)3.5×0.6 3 3.18 ~ 3.21(100~85) 5 3.20 ~ 3.26 (100~75)4 ×0.7 4 3.63 ~ 3.67(100~85) 6 3.65 ~ 3.70 (100~85)5 ×0.8 4 4.57 ~ 4.62(100~85)6 4.59 ~ 4.66 (100~80)6 ×1 4 5.45 ~ 5.51(100~85)7 5.48 ~ 5.57 (100~80)7 ×1 4 6.45 ~ 6.51(100~85) 7 6.48 ~ 6.57 (100~80)8 ×1.25 5 7.31 ~ 7.38(100~85) 7 7.34 ~ 7.41 (100~85)8 ×1 4 7.45 ~ 7.51(100~85) 7 7.48 ~ 7.57 (100~80) 10 ×1.5 5 9.16 ~ 9.22(100~90) 7 9.18 ~ 9.28 (100~85) 10 ×1.25 5 9.31 ~ 9.38(100~85) 7 9.34 ~ 9.41 (100~85) 10 ×1 5 9.46 ~ 9.52(100~85) 7 9.48 ~ 9.57 (100~80)12 ×1.75 5 11.01 ~11.08(100~90) 8 11.05 ~11.15(100~85)12 ×1.5 5 11.16 ~11.22(100~90) 7 11.18 ~11.28(100~85)12 ×1.25 5 11.31 ~11.38(100~85) 7 11.34 ~11.41(100~85)12 ×1 5 11.46 ~11.52(100~85) 7 11.48 ~11.57(100~80)14 ×2 6 12.83 ~12.95(100~90) 10 12.92 ~13.04(100~85)14 ×1.5 5 13.16 ~13.22(100~90) 9 13.21 ~13.30(100~85)16 ×2 6 14.87 ~14.95(100~90) 10 14.92 ~15.04(100~85)16 ×1.5 5 15.16 ~15.22(100~90) 9 15.21 ~15.30(100~80)18 ×2.5 6 16.57 ~16.67(100~90) 11 16.63 ~16.78(100~85)18 ×1.5 6 17.17 ~17.23(100~90) 10 17.22 ~17.31(100~85)20 ×2.5 6 18.57 ~18.67(100~90) 11 18.63 ~18.78(100~85)20 ×1.5 6 19.17 ~19.23 10 19.22 ~19.31(100~90) (100~85)9、美制粗牙螺紋(NRT) (單位：mm)螺紋尺寸2B級螺紋用下孔徑3B級螺紋用下孔徑RH 精度最小～最大(嵌合率％)RH精度最小～最大(嵌合率％)NO.2-56UNC 4 1.96 ~ 2.02 (100~65) 3 1.95 ~ 2.01 (100~65) 3-48 4 2.25 ~ 2.32 (100~65) 3 2.23 ~ 2.31 (100~65) 4-40 5 2.52 ~ 2.60 (100~70) 3 2.50 ~ 2.58 (100~70) 5-40 5 2.86 ~ 2.93 (100~70) 3 2.83 ~ 2.91 (100~70) 6-32 5 3.09 ~ 3.17 (100~75) 3 3.06 ~ 3.14 (100~75) 8-32 6 3.75 ~ 3.83 (100~75) 4 3.74 ~ 3.82 (100~75) 10-24 6 4.26 ~ 4.35 (100~80) 4 4.24 ~ 4.32 (100~80) 12-24 6 4.92 ~ 5.01 (100~80) 4 4.90 ~ 4.96 (100~85) 1/4 -20 6 5.66 ~ 5.76 (100~80) 4 5.64 ~ 5.74 (100~80) 5/16 -18 7 7.18 ~7.29 (100~80) 5 7.15 ~7.24 (100~85) 3/8 -16 7 8.66 ~8.78 (100~80) 5 8.63 ~8.73 (100~85)7/16 -14 7 10.11 ~10.25(100~80) 5 10.08 ~10.19 (100~85)1/2 -13 8 10.62 ~11.78(100~80) 6 11.60 ~11.68 (100~90)9/16 -12 10 13.14 ~13.27(100~85) 8 13.11 ~13.24 (100~85)5/8 -11 11 14.62 ~14.76(100~85) 8 14.58 ~14.67 (100~90)3/4 -10 12 17.67 ~17.88(100~80) 9 17.63 ~17.74 (100~90)7/8 - 9 12 20.68 ~20.85(100~85) 9 20.64 ~20.75 (100~90)1 - 8 13 23.65 ~23.84(100~85) 10 23.61 ~23.74 (100~90)二、螺紋下孔徑表(無屑絲攻用)1、美制細牙螺紋(NRT) (單位：mm)螺紋尺寸2B級螺紋用下孔徑3B級螺紋用下孔徑RH 精度最小～最大(嵌合率％)RH精度最小～最大(嵌合率％)NO.2-64UNF 3 1.98 ~ 2.04 (100~65) 2 1.97 ~ 2.03 (100~65) 3-56 4 2.29 ~ 2.35 (100~65) 3 2.28 ~ 2.34 (100~65) 4-48 4 2.57 ~ 2.64 (100~70) 3 2.56 ~ 2.63 (100~70) 5-44 4 2.88 ~ 2.95 (100~70) 3 2.87 ~ 2.94 (100~70) 6-40 5 3.19 ~ 3.26 (100~70) 3 3.16 ~ 3.22 (100~75) 8-36 5 3.80 ~ 3.88 (100~75) 4 3.79 ~ 3.86 (100~75) 10-32 5 4.41 ~ 4.48 (100~80) 4 4.40 ~ 4.46 (100~80) 12-28 5 5.00 ~ 5.08 (100~80) 4 4.99 ~ 5.06 (100~80) 1/4-28 5 5.86 ~ 5.93 (100~80) 4 5.85 ~ 5.92 (100~80) 5/16-24 6 7.38 ~7.46 (100~80) 5 7.36 ~7.43 (100~85) 3/8 -24 6 8.96 ~9.05 (100~80) 5 8.95 ~9.02 (100~85)7/16-20 7 10.44 ~10.54 (100~80) 5 10.41 ~10.49 (100~85) 1/2-20 7 12.02 ~12.12 (100~80) 5 12.00 ~12.05 (100~90) 9/16-18 9 13.55 ~13.66 (100~80) 7 13.53 ~13.58 (100~90) 5/8 -18 9 15.14 ~15.25 (100~80) 7 15.11 ~15.17 (100~90) 3/4 -16 10 18.22 ~18.32 (100~85) 7 18.18 ~18.25 (100~90) 7/8 -14 11 21.27 ~21.38 (100~85) 8 21.23 ~21.27 (100~95)1 - 12 12 24.28 ~24.41 (100~85) 9 24.24 ~24.32 (100~90)2、英制管用平行螺紋(NRT) (單位：mm)螺紋尺寸RH精度最小～最大(嵌合率％)PF 1/8 6 9.24~9.35 (100~80)1/4 7 12.41~12.62 (100~75)3/8 7 15.92~16.12 (100~75)1/2 8 19.93~20.15 (100~80)3/4 8 25.41~25.64 (100~80)3、公制螺紋(HRT) (單位：mm)螺紋尺寸1級螺紋用下孔徑2級螺紋用下孔徑RH 精度最小～最大(嵌合率％)RH精度最小～最大(嵌合率％)M 1×0.25 2 0.858~0.879(100~85)4 0.858~0.887 (100~80)1.2×0.25 2 1.058~1.079(100~85)4 1.058~1.087 (100~80) 1.4×0.3 2 1.23 ~1.26 (100~85) 4 1.23 ~1.26 (100~80) 1.6×0.35 2 1.40 ~1.44 (100~80) 4 1.40 ~1.45 (100~75) 1.7×0.35 － 1.50 ~1.54 (100~80) 4 1.50 ~1.55 (100~75)1.8×0.35 2 1.60 ~1.64 (100~80) 4 1.60 ~1.65 (100~75)2 ×0.4 2 1.77 ~1.82 (100~80) 4 1.77 ~1.82 (100~80) 2 ×0.25 2 1.858~1.887(100~80)－ 1.858~1.887 (100~80) 2.3×0.4 － 2.07 ~2.12 (100~80) 4 2.07 ~2.13 (100~75) 2.5×0.45 3 2.24 ~2.30 (100~80) 5 2.24 ~2.31 (100~75)2.6×0.45 － 2.34 ~2.40 (100~80) 5 2.34 ~2.41 (100~75)3 ×0.6 3 2.72 ~2.73 (100~90) 5 2.66 ~2.73 (100~90)3 ×0.5 5 2.72 ~2.77 (100~80) 6 2.72 ~2.78 (100~75)3 ×0.35 3 2.80 ~2.84 (100~80)5 2.80 ~2.85 (100~75)3.5×0.6 3 3.16 ~3.21 (100~85) 5 3.16 ~3.25 (100~75)4 ×0.75 3 3.57 ~3.64 (100~85)6 3.57 ~3.64 (100~85)4 ×0.7 6 3.60 ~3.66 (100~85) 7 3.60 ~3.66 (100~85)4 ×0.5 3 3.71 ~3.77 (100~80)6 3.71 ~3.79 (100~75)5 ×0.9 3 4.49 ~4.59 (100~85) 7 4.49 ~4.59 (100~85)5 ×0.8 3 4.55 ~4.62 (100~85) 8 4.55 ~4.64 (100~80)5 ×0.5 3 2.72 ~4.77 (100~80)6 4.72 ~4.79 (100~75)6 ×1 4 5.43 ~5.52 (100~85)7 5.43 ~5.55 (100~80)6 ×0.75 3 5.57 ~5.64 (100~85) 7 5.57 ~5.66 (100~80)4、公制粗牙螺紋HL-NRT (單位：mm)螺紋尺寸RH精度最小～最大(嵌合率％)M 3 ×0.5 3 3.39~3.43 (100~80)4 ×0.7 4 4.54~4.58 (100~85)5 ×0.8 4 5.61~5.66 (100~85)6 ×1 4 6.75~6.81 (100~85)8 ×1.25 5 8.93~9.01 (100~85)10 ×1.5 5 11.11~11.17 (100~90)10 ×1.25 5 10.93~11.01 (100~85)12 ×1.75 5 13.28~13.17 (100~90)12 ×1.5 5 13.11~13.17 (100~90)12 ×1.25 5 12.93~13.01 (100~85)三、螺紋下孔徑表(護套螺紋用)1、公制粗牙螺紋(單位：mm)螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑M 2.5×0.45 2.60 2.65 2.62.6×0.45 2.70 2.75 2.73 ×0.5 3.12 3.20 3.14 ×0.7 4.17 4.30 4.25 ×0.8 5.16 5.33 5.26 ×1 6.25 6.42 6.38 ×1.25 8.31 8.52 8.410 ×1.5 10.37 10.62 10.512 ×1.75 12.43 12.73 12.514 ×2 14.49 14.83 14.516 ×2 16.49 16.83 16.518 ×2.5 18.58 19.04 19.020 ×2.5 20.58 21.04 21.022 ×2.5 22.58 23.04 23.024 ×2.5 24.70 25.25 25.02、公制細牙螺紋(單位：mm)螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑M 10 ×1 10.25 10.42 10.310 ×1.25 10.31 10.52 10.412 ×1.25 12.31 12.52 12.512 ×1.5 12.37 12.62 12.514 ×1.5 14.37 14.62 14.516 ×1.5 16.37 16.62 16.518 ×1.5 18.37 18.62 18.520 ×1.5 20.37 20.62 20.520 ×2 20.47 20.83 20.522 ×1.5 22.37 22.62 22.524 ×1.5 24.37 24.62 24.524 ×2 24.47 24.83 24.530 ×1.5 30.37 30.62 30.53、美制粗牙螺紋(單位：mm)螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑NO. 2 –56UNC 2.29 2.39 2.33 –48 2.64 2.74 2.74 –40 2.95 3.07 3.05 –40 3.25 3.38 3.36 –32 3.66 3.81 3.78 –32 4.32 4.47 4.410 –24 5.05 5.21 5.112 –24 5.61 5.77 5.71/4 –20 6.63 6.78 6.75/16 –8 8.33 8.48 8.43/8 –16 9.91 10.11 10.07/16–14 11.51 11.76 11.51/2 –13 13.08 13.34 13.19/16–12 14.68 14.94 14.74、美制細牙螺紋(單位：mm)螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑NO. 4 –48UNF 2.97 3.05 3.06 –40 3.66 3.78 3.78 –36 4.32 4.44 4.410 –32 4.98 5.13 5.01/4 –28 6.53 6.71 6.65/16 –24 8.20 8.38 8.23/8 –24 9.78 9.96 9.87/16 –20 11.43 11.63 11.51/2 –20 13.03 13.26 13.19/16 –18 14.66 14.88 14.75/8 –18 16.26 16.48 16.33/4 –16 19.43 19.68 19.57/8 –14 22.61 22.86 22.71 –12 25.76 26.04 26.0各種換算表管用螺絲基準寸法(mm)規格英制JIS(PT)美式ASA(NPT)山數外徑有效徑山數外徑有效徑1/167.723277.777.142 1/8289.7289.1472710.1169.489 1/41913.15712.3011813.42712.487 3/81916.66215.8061816.86615.926 1/21420.95519.7931420.98019.772 3/41426.44125.2791426.32625.117 11133.24931.770111/233.93231.461 11/41141.91040.431111/241.68940.218 11/21147.80346.324111/247.68946.287 21159.61458.135111/259.79658.325 21/21175.18473.705872.27370.159 31187.88486.405888.18286.068 31/211100.33098.8518100.69198.776 411113.030111.5518113.548111.433 41/211125.730124.251511138.430136.9518141.3138.412 51/211151.130149.651611163.830162.3518168.3165.252 711189.230187.751811214.630213.1518219.1215.901美制螺絲外徑公厘(mm)換算表規格吋mmNO.00.0600 1.52410.0730 1.85420.0860 2.18430.0990 2.51540.1120 2.84550.1250 3.17560.1380 3.50580.1640 4.166100.1900 4.826120.2160 5.486山數節距換算表山數(每25.4mm) 節距mm100 0.254080 0.317572 0.352864 0.396960 0.423356 0.453648 0.529244 0.577340 0.635036 0.705632 0.793828 0.907124 1.058320 1.270018 1.411116 1.587514 1.814313 1.953812 2.116711 2.309110 2.54009 2.82228 3.17507 3.62866 4.23335 5.08004 1/2 5.64444 6.35003 1/2 7.25713 1/4 7.81543 8.46672 7/8 8.83482 3/4 9.23642 5/8 9.67622 1/2 10.1600办公室卫生管理制度一、主要内容与适用范围1．本制度规定了办公室卫生管理的工作内容和要求及检查与考核。

螺纹攻牙底孔选用作业标准

M6*1
5.19
M10切屑式絲攻使用)
規格尺寸
底孔規格
規格尺寸
底孔規格
規格尺寸
底孔規格
W 1/16-60
1.3
W 3/16-24
3.8
W 3/8-16
8.0
W 3/32-48
1.9
W 7/32-24
4.5
W 7/16-14
9.4
W 1/8-40
2.6
W 1/4-20
5.1
M8*0.5
7.6
M1.7*0.35
1.42
M4.5*0.75
3.89
M8*0.75
7.4
M2*0.4
1.67
M5*0.5
4.62
M8*1
7.2
M2.3*0.4
1.97
M5*0.8
4.35
M8*1.25
6.9
M2.5*0.45
2.12
M5*0.9
4.17
M9*0.5
8.6
M2.6*0.45
2.22
M5.5*0.5
5.12
M9*0.75
8.4
M3*0.35
2.72
M5.5*0.75
4.9
M9*1
8.2
M3*0.5
2.59
M5.5*0.9
4.67
M9*1.25
7.9
M3*0.6
2.42
M6*0.5
5.6
M10*0.5
9.6
M3.5*0.35
3.22
M6*0.75
5.43
M10*0.75
9.4
M3.5*0.6
3.05
*****目錄 *****

攻牙底孔参数

攻牙底孔的使用参数表一、螺紋下孔徑表1、公制粗牙螺紋JIS B 0209-1982(單位：mm)螺纹尺寸钻头直径螺纹下孔徑內螺紋小徑最小直径最大直径M 1 ×0.25 0.75 0.78 (80%) 0.729 0.7851.1 ×0.25 0.85 0.88 (80%) 0.829 0.8851.2 ×0.25 0.95 0.98 (80%) 0.929 0.9851.4 ×0.3 1.1 1.14 (80%) 1.075 1.1421.6 ×0.35 1.25 1.32 (75%) 1.221 1.3211.8 ×0.35 1.45 1.52 (75%) 1.421 1.5212 ×0.4 1.6 1.65 (80%) 1.567 1.6792.2 ×0.45 1.75 1.83 (75%) 1.713 1.8382.5 ×0.45 2.1 2.13 (75%) 2.013 2.1383 ×0.5 2.5 2.59 (75%) 2.459 2.5993.5 ×0.6 2.9 3.01 (75%) 2.850 3.0104 ×0.7 3.3 3.39 (80%) 3.242 3.4224.5 ×0.75 3.8 3.85 (80%) 3.688 3.8785 ×0.8 4.2 4.31 (80%) 4.134 4.3346 × 1 5 5.13 (80%) 4.917 5.1537 × 1 6 6.13 (80%) 5.917 6.1538 × 1.25 6.8 6.85 (85%) 6.647 6.9129 × 1.25 7.8 7.85 (85%) 7.647 7.91210 × 1.5 8.5 8.62 (85%) 8.376 8.67611 × 1.5 9.5 9.62 (85%) 9.376 9.67612 × 1.75 10.3 10.40 (85%) 10.106 10.44114 × 2 12 12.2 (85%) 11.835 12.21016 × 2 14 14.2 (85%) 13.835 14.21018 × 2.5 15.5 15.7 (85%) 15.294 15.74420 × 2.5 17.5 17.7 (85%) 17.294 17.74422 × 2.5 19.5 19.2 (85%) 19.294 19.74424 × 3 21 21.2 (85%) 20.752 21.25227 × 3 24 24.2 (85%) 23.752 24.25230 × 3.5 26.5 26.6 (90%) 26.211 26.77133 × 3.5 29.5 29.6 (90%) 29.211 29.77136 × 4 32 32.1 (90%) 31.670 32.27039 × 4 35 35.1 (90%) 34.670 35.27042 × 4.5 37.5 37.6 (90%) 37.129 37.79945 × 4.5 40.5 40.6 (90%) 40.129 40.79948 × 5 43 43.1 (90%) 42.587 43.297 註(1)M1.4以下等級：5H、M1.6以上等級：6H (2)基於JIS B 0209-1982標準2、公制細牙螺紋-01 JIS B 0211-1982(單位：mm)螺纹尺寸钻头直径螺纹下孔徑內螺紋小徑最小直径最大直径M 2.5 ×0.35 2.2 2.22 (75%) 2.121 2.2213 ×0.35 2.7 2.72 (75%) 2.621 2.7213.5 ×0.35 3.2 3.22 (75%) 3.121 3.2214 ×0.5 3.5 3.59 (75%) 3.459 3.5994.5 ×0.5 4 4.09 (75%) 3.959 4.0995 ×0.5 4.5 4.59 (75%) 4.459 4.5995.5 ×0.5 5 5.09 (75%) 4.959 5.0996 ×0.75 5.3 5.35 (80%) 5.188 5.3787 ×0.75 6.3 6.35 (80%) 6.188 6.3788 × 1 7 7.13 (80%) 6.917 7.1538 ×0.75 7.3 7.35 (80%) 7.188 7.3789 × 1 8 8.13 (80%) 7.917 8.1539 ×0.75 8.3 8.35 (80%) 8.188 8.37810 × 1.25 8.8 8.85 (85%) 8.647 8.91210 × 1 9 9.13 (80%) 8.917 9.15310 ×0.75 9.3 9.35 (80%) 9.188 9.37811 × 1 10 10.13 (80%) 9.917 10.15311 ×0.75 10.3 10.35 (80%) 10.188 10.37812 × 1.5 10.5 10.62 (85%) 10.376 10.67612 × 1.25 10.8 10.85 (85%) 10.647 10.91212 × 1 11 11.13 (80%) 10.917 11.15314 × 1.5 12.5 12.62 (85%) 12.376 12.67614 × 1 13 13.13 (80%) 12.917 13.15315 × 1.5 13.5 13.62 (85%) 13.376 13.67615 × 1 14 14.13 (80%) 13.917 14.15316 × 1.5 14.5 14.62 (85%) 14.376 14.67616 × 1 15 15.13 (80%) 14.917 15.15317 × 1.5 15.5 15.62 (85%) 15.376 15.67617 × 1 16 16.13 (80%) 15.917 16.15318 × 2 16 16.2 (85%) 15.835 16.21018 × 1.5 16.5 16.62 (85%) 16.376 16.67618 × 1 17 17.13 (80%) 16.917 17.15320 × 2 18 18.2 (85%) 17.835 18.21020 × 1.5 18.5 18.62 (85%) 18.376 18.67620 × 1 19 19.13 (80%) 18.917 19.15322 × 2 20 20.2 (85%) 19.835 20.21022 × 1.5 20.5 20.62 (85%) 20.376 20.67622 × 1 21 21.13 (80%) 20.917 21.15324 × 2 22 22.2 (85%) 21.835 22.21024 × 1.5 22.5 22.62 (85%) 22.376 22.67624 × 1 23 23.13 (80%) 22.917 23.15325 × 2 23 23.2 (85%) 22.835 23.21025 × 1.5 23.5 23.62 (85%) 23.376 23.67625 × 1 24 24.13 (80%) 23.917 24.153公制細牙螺紋-02 JIS B 0211-1982(單位：mm)螺纹尺寸钻头直径螺纹下孔徑內螺紋小徑最小直径最大直径M 26 × 1.5 24.5 24.62 (85%) 24.376 24.676 27 × 2 25 25.2 (85%) 24.835 25.210 27 × 1.5 25.5 25.62 (85%) 25.376 25.67627 × 1 26 26.13 (80%) 25.917 26.15328 × 2 26 26.2 (85%) 25.835 26.210 28 × 1.5 26.5 26.62 (85%) 26.376 26.676 28 × 1 27 27.13 (80%) 26.917 27.15330 × 3 27 27.2 (85%) 26.752 27.252 30 × 2 28 28.2 (85%) 27.835 28.210 30 × 1.5 28.5 28.62 (85%) 28.376 28.676 30 × 1 29 29.13 (80%) 28.917 29.153 32 × 2 30 30.2 (85%) 29.835 30.21032 × 1.5 30.5 30.62 (85%) 30.376 30.67633 × 3 30 30.2 (85%) 29.752 30.252 33 × 2 31 31.2 (85%) 30.835 31.210 33 × 1.5 31.5 31.62 (85%) 31.376 31.67635 × 1.5 33.5 33.62 (85%) 33.376 33.67636 × 3 33 33.2 (85%) 32.752 33.252 36 × 2 34 34.2 (85%) 33.835 34.210 36 × 1.5 34.5 34.62 (85%) 34.376 34.67638 × 1.5 36.5 36.62 (85%) 36.376 36.67639 × 3 36 36.2 (85%) 35.752 36.252 39 × 2 37 37.2 (85%) 36.835 37.21039 × 1.5 37.5 37.62 (85%) 37.376 37.67640 × 3 37 37.2 (85%) 36.752 37.252 40 × 2 38 38.2 (85%) 37.835 38.210 40 × 1.5 38.5 38.62 (85%) 38.376 38.676 42 × 4 38 38.1 (90%) 37.670 38.270 42 × 3 39 39.2 (85%) 38.752 39.252 42 × 2 40 40.2 (85%) 39.835 40.210 42 × 1.5 40.5 40.62 (85%) 40.376 40.676 45 × 4 41 41.1 (90%) 40.670 41.270 45 × 3 42 42.2 (85%) 41.752 42.252 45 × 2 43 43.2 (85%) 42.835 43.210 45 × 1.5 43.5 43.62 (85%) 43.376 43.676 48 × 4 44 44.1 (90%) 43.670 44.270 48 × 3 45 45.2 (85%) 44.752 45.252 48 × 2 46 46.2 (85%) 45.835 46.21048 × 1.5 46.5 46.62 (85%) 46.376 46.676 50 × 3 47 47.2 (85%) 46.752 47.252 50 × 2 48 48.2 (85%) 47.835 48.210 50 × 1.5 48.5 48.62 (85%) 48.376 48.676 註(1)等級：6H(2)基於JIS B 0211-1982標準3、美制粗牙螺紋(單位：mm)螺纹尺寸钻头直径2B级螺纹下孔徑內螺紋小徑最小直径最大直径NO.1 -64UNC 1.55 1.57 (65%) 1.425 1.5822 -56 1.8 1.86 (65%) 1.695 1.8713 -48 2.1 2.14 (65%) 1.941 2.1464 -40 2.3 2.36 (70%) 2.157 2.3855 -40 2.6 2.69 (70%) 2.487 2.6976 -32 2.8 2.86 (75%) 2.642 2.8958 -32 3.4 3.52 (75%) 3.302 3.530 10 -24 3.9 3.91 (80%) 3.683 3.962 12 -24 4.5 4.57 (80%) 4.344 4.5971/4 -20 5.1 5.25 (80%) 4.979 5.2575/16 -18 6.6 6.72 (80%) 6.401 6.7313/8 -16 8 8.15 (80%) 7.798 8.153 7/16 -14 9.4 9.50 (80%) 9.144 9.550 1/2 -13 10.8 11.0 (80%) 10.592 11.023 9/16 -12 12.2 12.3 (85%) 11.989 12.446 5/8 -11 13.6 13.8 (85%) 13.386 13.868 3/4 -10 16.5 16.8 (80%) 16.307 16.840 7/8 - 9 19.5 19.6 (85%) 19.177 19.761 1 - 8 22.2 22.5 (85%) 21.971 22.6061 1/8 - 7 25 25.2 (85%) 24.638 25.3491 1/4 - 7 28.2 28.4 (85%) 27.813 28.5241 3/8 - 6 30.8 31.0 (85%) 30.353 31.1151 1/2 - 6 34 34.2 (85%) 33.528 34.2901 3/4 - 5 39.5 39.8 (85%) 38.964 39.8272 - 4 45.2 45.3 (90%) 44.679 45.593 4、美制細牙螺紋(單位：mm)螺纹尺寸钻头直径2B级螺纹下孔徑內螺紋小徑最小直径最大直径NO. 0 -80UNF 1.25 1.30 (65%) 1.182 1.3051 -72 1.55 1.61 (65%) 1.474 1.6122 -64 1.85 1.90 (65%) 1.756 1.9123 -56 2.1 2.17 (70%) 2.025 2.1974 -48 2.4 2.44 (70%) 2.271 2.4585 -44 2.7 2.74 (70%) 2.551 2.7406 -40 2.9 3.02 (70%) 2.820 3.0228 -36 3.5 3.59 (75%) 3.404 3.60610 -32 4.1 4.14 (80%) 3.963 4.16512 -28 4.6 4.70 (80%) 4.496 4.7241/4 -28 5.5 5.56 (80%) 5.360 5.5885/16 -24 6.9 7.02 (80%) 6.782 7.0353/8 -24 8.5 8.61 (80%) 8.382 8.6367/16 -20 9.9 10.01 (80%) 9.729 10.033 1/2 -20 11.5 11.60 (80%) 11.329 11.607 9/16 -18 12.9 13.07 (80%) 12.751 13.081 5/8 -18 14.5 14.65 (80%) 14.351 14.681 3/4 -16 17.5 17.59 (85%) 17.323 17.678 7/8 -14 20.5 20.6 (85%) 20.270 20.675 1 -12 23.2 23.5 (85%) 23.114 23.571 1 1/8 -12 26.5 26.7 (80%) 26.289 26.746 1 1/4 -12 29.5 29.9 (80%) 29.464 29.921 1 3/8 -12 32.8 33.0 (85%) 32.639 33.096 1 1/2 -12 36 36.2 (85%) 35.814 36.271 5、英制粗牙螺紋(單位：mm) 螺紋尺寸下孔徑嵌合率A列(硬材質) B列(軟材質)A列直徑B列直徑內螺紋最小徑內螺紋最大徑W 1/8 2.6 2.5 70.7 83.0 70.0 88.3 3/16 3.7 3.6 78.4 85.8 70.0 88.3 1/4 5.1 5.0 76.9 83.0 70.5 88.3 5/16 6.6 6.5 74.0 99.5 70.1 88.4 3/8 8.0 7.9 75.0 80.0 69.5 88.2 7/16 9.4 9.3 73.7 80.0 69.0 88.8 1/2 10.7 10.5 73.8 81.2 69.0 88.2 9/16 12.3 12.0 73.4 84.4 69.0 88.2 5/8 13.7 13.5 73.5 80.3 69.6 88.5 3/4 16.7 16.5 72.3 78.4 69.6 88.3 7/8 19.5 19.3 75.4 80.9 70.1 88.4 1 22.4 22.0 73.8 83.6 71.0 88.2 1 1/8 25.0 24.8 76.9 81.3 72.0 88.4 1 1/4 28.3 28.0 74.3 80.7 72.0 88.4 1 3/8 30.5 30.3 81.6 85.3 73.8 88.6 1 1/2 33.8 33.5 79.3 84.8 73.8 88.6 1 5/8 36.0 35.7 81.1 85.7 74.8 88.3 1 3/4 39.2 39.0 80.7 83.8 74.8 88.31 7/8 41.8 41.5 80.6 84.7 74.7 88.42 45.0 44.7 80.2 84.4 74.7 88.4 6、英制管用螺紋(單位：mm)管用螺紋尺寸JIS B 0203 JIS B 2301錐管內螺紋Rc(PT) 平行內螺紋Rp(PS) 錐管內螺紋計算值下孔徑計算值下孔徑計算值下孔徑1/16 6.230 6.2 6.490 6.5 －－1/8 8.235 8.2 8.495 8.5 8.191 8.2 1/4 10.941 10.9 11.341 11.4 10.945 10.9 3/8 14.428 14.4 14.846 14.9 14.388 14.4 1/2 17.950 18 18.489 18.5 17.943 18 3/4 23.349 23 23.975 24 23.305 23 1 29.423 29 30.111 30 29.353 29 1 1/4 37.940 38 38.772 39 37.890 381 1/2 43.833 44 44.565 45 43.720 432 55.412 55 56.476 56 55.406 552 1/2 70.701 71 72.009 72 70.788 703 83.201 83 84.709 85 83.364 833 1/2 95.547 96 97.155 97 95.747 954 107.834 108 109.855 110 108.322 1085 133.110 133 135.255 135 133.597 1336 158.510 159 160.655 161 158.810 1587 183.360 183 185.954 1868 208.560 209 211.354 2129 233.960 234 236.754 23710 259.166 259 262.154 26212 309.747 310 312.875 3137、美制管用耐密斜行螺紋(NPTF‧NPSF) (單位：mm)管用螺紋尺寸斜行螺紋(NPTF) 平行螺紋(NPSF)鑽頭直徑鑽頭直徑使用鉸刀場合不使用鉸刀合1/16 －0.234 ( 5.94) 0.246 ( 6.25) 1/4 0.250 ( 6.35) 1/8 21/64 0.328 ( 8.33) 0.339 ( 8.61) 11/32 0.344 ( 8.74)1/4 27/64 0.422 (10.72) 7/16 0.438 (11.13) －0.444 (11.28) 3/8 9/16 0.562 (14.27) 37/64 0.578 (14.68) 37/64 0.578 (14.68) 1/2 11/16 0.688 (17.48) 45/64 0.703 (17.86) 23/32 0.719 (18.26) 3/4 57/64 0.891 (22.63) 59/64 0.922 (23.42) －0.922 (23.42) 1 1 1/8 1.125 (28.58) 1 5/32 1.156 (29.36) 1 5/32 1.156 (29.36) 1 1/4 1 15/32 1.469 (37.31) 11/21.500 (38.10) －－1 1/2 1 45/64 1.703 (43.26) 147/641.734 (44.04) －－2 2 3/16 2.188 (55.58) 2 7/32 2.219 (56.36) －－2 1/2 2 19/32 2.594 (65.89) 241/642.641 (67.08) －－上述鑽頭直徑來源於美制管用耐密斜行螺紋ANSI B1.20.3—1957 Dryseal Pipe Threads (Inch)標準8、公制螺紋(NRT) (單位：mm)螺紋尺寸1級螺紋用下孔徑2級螺紋用下孔徑RH 精度最小～最大(嵌合率％)RH精度最小～最大(嵌合率％)M 1 ×0.25 2 0.87 ~ 0.89 (100~85) 4 0.90 ~0.92 (100~80) 1.1×0.25 2 0.97 ~ 0.99 (100~85) 4 1.00 ~1.02 (100~80) 1.2×0.25 2 1.07 ~ 1.09 (100~85) 4 1.10 ~1.12 (100~80) 1.4×0.3 2 1.244~ 1.263 (100~85) 4 1.270~ 1.294 (100~80)1.7×0.35 2 1.51 ~ 1.54 (100~80) 4 1.54 ~ 1.58 (100~75)2 ×0.4 2 1.78 ~ 1.82 (100~80) 4 1.81 ~ 1.85 (100~75) 2.3×0.4 2 2.08 ~ 2.12 (100~80) 4 2.11 ~ 2.15 (100~75) 2.5×0.45 2 2.25 ~ 2.29 (100~80) 4 2.28 ~ 2.33 (100~75)2.6×0.45 2 2.35 ~ 2.39 (100~80) 4 2.38 ~ 2.43 (100~75)3 ×0.5 3 2.74 ~ 2.78 (100~80)5 2.76 ~ 2.81 (100~75)3.5×0.6 3 3.18 ~ 3.21 (100~85) 5 3.20 ~ 3.26 (100~75)4 ×0.7 4 3.63 ~ 3.67 (100~85) 6 3.65 ~ 3.70 (100~85)5 ×0.8 4 4.57 ~ 4.62 (100~85)6 4.59 ~ 4.66 (100~80)6 ×1 4 5.45 ~ 5.51 (100~85)7 5.48 ~ 5.57 (100~80)7 ×1 4 6.45 ~ 6.51 (100~85) 7 6.48 ~ 6.57 (100~80)8 ×1.25 5 7.31 ~ 7.38 (100~85) 7 7.34 ~ 7.41 (100~85) 8 ×1 4 7.45 ~ 7.51 (100~85) 7 7.48 ~ 7.57 (100~80) 10 ×1.5 5 9.16 ~ 9.22 (100~90) 7 9.18 ~ 9.28 (100~85) 10 ×1.25 5 9.31 ~ 9.38 (100~85) 7 9.34 ~ 9.41 (100~85) 10 ×1 5 9.46 ~ 9.52 (100~85) 7 9.48 ~ 9.57 (100~80) 12 ×1.75 5 11.01 ~11.08 (100~90) 8 11.05 ~11.15 (100~85) 12 ×1.5 5 11.16 ~11.22 (100~90) 7 11.18 ~11.28 (100~85) 12 ×1.25 5 11.31 ~11.38 (100~85) 7 11.34 ~11.41 (100~85) 12 ×1 5 11.46 ~11.52 (100~85) 7 11.48 ~11.57 (100~80) 14 ×2 6 12.83 ~12.95 (100~90) 10 12.92 ~13.04 (100~85) 14 ×1.5 5 13.16 ~13.22 (100~90) 9 13.21 ~13.30 (100~85) 16 ×2 6 14.87 ~14.95 (100~90) 10 14.92 ~15.04 (100~85) 16 ×1.5 5 15.16 ~15.22 (100~90) 9 15.21 ~15.30 (100~80) 18 ×2.5 6 16.57 ~16.67 (100~90) 11 16.63 ~16.78 (100~85) 18 ×1.5 6 17.17 ~17.23 (100~90) 10 17.22 ~17.31 (100~85) 20 ×2.5 6 18.57 ~18.67 (100~90) 11 18.63 ~18.78 (100~85) 20 ×1.5 6 19.17 ~19.23 (100~90) 10 19.22 ~19.31 (100~85) 9、美制粗牙螺紋(NRT) (單位：mm)螺紋尺寸2B級螺紋用下孔徑3B級螺紋用下孔徑RH 最小～最大RH 最小～最大精度(嵌合率％) 精度(嵌合率％)NO. 2-56UNC 4 1.96 ~ 2.02 (100~65) 3 1.95 ~ 2.01 (100~65) 3-48 4 2.25 ~ 2.32 (100~65) 3 2.23 ~ 2.31 (100~65) 4-40 5 2.52 ~ 2.60 (100~70) 3 2.50 ~ 2.58 (100~70) 5-40 5 2.86 ~ 2.93 (100~70) 3 2.83 ~ 2.91 (100~70) 6-32 5 3.09 ~ 3.17 (100~75) 3 3.06 ~ 3.14 (100~75) 8-32 6 3.75 ~ 3.83 (100~75) 4 3.74 ~ 3.82 (100~75) 10-24 6 4.26 ~ 4.35 (100~80) 4 4.24 ~ 4.32 (100~80) 12-24 6 4.92 ~ 5.01 (100~80) 4 4.90 ~ 4.96 (100~85) 1/4 -20 6 5.66 ~ 5.76 (100~80) 4 5.64 ~ 5.74 (100~80) 5/16 -18 7 7.18 ~ 7.29 (100~80) 5 7.15 ~ 7.24 (100~85) 3/8 -16 7 8.66 ~ 8.78 (100~80) 5 8.63 ~ 8.73 (100~85) 7/16 -14 7 10.11 ~10.25 (100~80) 5 10.08 ~10.19 (100~85) 1/2 -13 8 10.62 ~11.78 (100~80) 6 11.60 ~11.68 (100~90) 9/16 -12 10 13.14 ~13.27 (100~85) 8 13.11 ~13.24 (100~85) 5/8 -11 11 14.62 ~14.76 (100~85) 8 14.58 ~14.67 (100~90) 3/4 -10 12 17.67 ~17.88 (100~80) 9 17.63 ~17.74 (100~90) 7/8 - 9 12 20.68 ~20.85 (100~85) 9 20.64 ~20.75 (100~90)1 - 8 13 23.65 ~23.84 (100~85) 10 23.61 ~23.74 (100~90)二、螺紋下孔徑表(無屑絲攻用)1、美制細牙螺紋(NRT) (單位：mm)螺紋尺寸2B級螺紋用下孔徑3B級螺紋用下孔徑RH 精度最小～最大(嵌合率％)RH精度最小～最大(嵌合率％)NO. 2-64UNF 3 1.98 ~ 2.04 (100~65) 2 1.97 ~ 2.03 (100~65) 3-56 4 2.29 ~ 2.35 (100~65) 3 2.28 ~ 2.34 (100~65) 4-48 4 2.57 ~ 2.64 (100~70) 3 2.56 ~ 2.63 (100~70) 5-44 4 2.88 ~ 2.95 (100~70) 3 2.87 ~ 2.94 (100~70) 6-40 5 3.19 ~ 3.26 (100~70) 3 3.16 ~ 3.22 (100~75) 8-36 5 3.80 ~ 3.88 (100~75) 4 3.79 ~ 3.86 (100~75) 10-32 5 4.41 ~ 4.48 (100~80) 4 4.40 ~ 4.46 (100~80) 12-28 5 5.00 ~ 5.08 (100~80) 4 4.99 ~ 5.06 (100~80) 1/4 -28 5 5.86 ~ 5.93 (100~80) 4 5.85 ~ 5.92 (100~80) 5/16-24 6 7.38 ~ 7.46 (100~80) 5 7.36 ~ 7.43 (100~85) 3/8 -24 6 8.96 ~ 9.05 (100~80) 5 8.95 ~ 9.02 (100~85) 7/16-20 7 10.44 ~10.54 (100~80) 5 10.41 ~10.49 (100~85) 1/2 -20 7 12.02 ~12.12 (100~80) 5 12.00 ~12.05 (100~90) 9/16-18 9 13.55 ~13.66 (100~80) 7 13.53 ~13.58 (100~90) 5/8 -18 9 15.14 ~15.25 (100~80) 7 15.11 ~15.17 (100~90) 3/4 -16 10 18.22 ~18.32 (100~85) 7 18.18 ~18.25 (100~90) 7/8 -14 11 21.27 ~21.38 (100~85) 8 21.23 ~21.27 (100~95)1 - 12 12 24.28 ~24.41 (100~85) 9 24.24 ~24.32 (100~90)2、英制管用平行螺紋(NRT) (單位：mm)螺紋尺寸RH精度最小～最大(嵌合率％)PF 1/8 6 9.24~ 9.35 (100~80)1/4 7 12.41~12.62 (100~75)3/8 7 15.92~16.12 (100~75)1/2 8 19.93~20.15 (100~80)3/4 8 25.41~25.64 (100~80)3、公制螺紋(HRT) (單位：mm)螺紋尺寸1級螺紋用下孔徑2級螺紋用下孔徑RH 精度最小～最大(嵌合率％)RH精度最小～最大(嵌合率％)M 1 ×0.25 2 0.858~0.879 (100~85) 4 0.858~0.887 (100~80) 1.2×0.25 2 1.058~1.079 (100~85) 4 1.058~1.087 (100~80) 1.4×0.3 2 1.23 ~1.26 (100~85) 4 1.23 ~1.26 (100~80) 1.6×0.35 2 1.40 ~1.44 (100~80) 4 1.40 ~1.45 (100~75) 1.7×0.35 － 1.50 ~1.54 (100~80) 4 1.50 ~1.55 (100~75)1.8×0.35 2 1.60 ~1.64 (100~80) 4 1.60 ~1.65 (100~75)2 ×0.4 2 1.77 ~1.82 (100~80) 4 1.77 ~1.82 (100~80) 2 ×0.25 2 1.858~1.887 (100~80) － 1.858~1.887 (100~80) 2.3×0.4 － 2.07 ~2.12 (100~80) 4 2.07 ~2.13 (100~75) 2.5×0.45 3 2.24 ~2.30 (100~80)5 2.24 ~2.31 (100~75)2.6×0.45 － 2.34 ~2.40 (100~80) 5 2.34 ~2.41 (100~75)3 ×0.6 3 2.72 ~2.73 (100~90) 5 2.66 ~2.73 (100~90) 3 ×0.5 5 2.72 ~2.77 (100~80) 6 2.72 ~2.78 (100~75) 3 ×0.35 3 2.80 ~2.84 (100~80)5 2.80 ~2.85 (100~75)3.5×0.6 3 3.16 ~3.21 (100~85) 5 3.16 ~3.25 (100~75)4 ×0.75 3 3.57 ~3.64 (100~85)6 3.57 ~3.64 (100~85) 4 ×0.7 6 3.60 ~3.66 (100~85) 7 3.60 ~3.66 (100~85)4 ×0.5 3 3.71 ~3.77 (100~80)6 3.71 ~3.79 (100~75)5 ×0.9 3 4.49 ~4.59 (100~85) 7 4.49 ~4.59 (100~85) 5 ×0.8 3 4.55 ~4.62 (100~85) 8 4.55 ~4.64 (100~80)5 ×0.5 3 2.72 ~4.77 (100~80)6 4.72 ~4.79 (100~75)6 ×1 4 5.43 ~5.52 (100~85)7 5.43 ~5.55 (100~80) 6 ×0.75 3 5.57 ~5.64 (100~85) 7 5.57 ~5.66 (100~80)4、公制粗牙螺紋HL-NRT (單位：mm)螺紋尺寸RH精度最小～最大(嵌合率％) M 3 ×0.5 3 3.39~3.43 (100~80)4 ×0.7 4 4.54~4.58 (100~85)5 ×0.8 4 5.61~5.66 (100~85)6 ×1 4 6.75~6.81 (100~85)8 ×1.25 5 8.93~9.01 (100~85)10 ×1.5 5 11.11~11.17 (100~90)10 ×1.25 5 10.93~11.01 (100~85)12 ×1.75 5 13.28~13.17 (100~90)12 ×1.5 5 13.11~13.17 (100~90)12 ×1.25 5 12.93~13.01 (100~85)三、螺紋下孔徑表(護套螺紋用)1、公制粗牙螺紋(單位：mm)螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑M 2.5 ×0.45 2.60 2.65 2.62.6 ×0.45 2.70 2.75 2.73 ×0.5 3.12 3.20 3.14 ×0.7 4.17 4.30 4.25 ×0.8 5.16 5.33 5.26 × 1 6.25 6.42 6.38 × 1.25 8.31 8.52 8.414 × 2 14.49 14.83 14.516 × 2 16.49 16.83 16.518 × 2.5 18.58 19.04 19.020 × 2.5 20.58 21.04 21.022 × 2.5 22.58 23.04 23.024 × 2.5 24.70 25.25 25.02、公制細牙螺紋(單位：mm) 螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑M 10 × 1 10.25 10.42 10.310 × 1.25 10.31 10.52 10.412 × 1.25 12.31 12.52 12.512 × 1.5 12.37 12.62 12.514 × 1.5 14.37 14.62 14.516 × 1.5 16.37 16.62 16.518 × 1.5 18.37 18.62 18.520 × 1.5 20.37 20.62 20.520 × 2 20.47 20.83 20.522 × 1.5 22.37 22.62 22.524 × 1.5 24.37 24.62 24.524 × 2 24.47 24.83 24.530 × 1.5 30.37 30.62 30.53、美制粗牙螺紋(單位：mm)螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑NO. 2 –56UNC 2.29 2.39 2.33 –48 2.64 2.74 2.74 –40 2.95 3.07 3.05 –40 3.25 3.38 3.36 –32 3.66 3.81 3.78 –32 4.32 4.47 4.410 –24 5.05 5.21 5.112 –24 5.61 5.77 5.71/4 –20 6.63 6.78 6.75/16 –8 8.33 8.48 8.43/8 –16 9.91 10.11 10.07/16 –14 11.51 11.76 11.51/2 –13 13.08 13.34 13.19/16 –12 14.68 14.94 14.74、美制細牙螺紋(單位：mm)螺紋尺寸下孔徑鑽頭直徑最小直徑最大直徑NO. 4 –48UNF 2.97 3.05 3.010 –32 4.98 5.13 5.01/4 –28 6.53 6.71 6.65/16 –24 8.20 8.38 8.23/8 –24 9.78 9.96 9.87/16 –20 11.43 11.63 11.51/2 –20 13.03 13.26 13.19/16 –18 14.66 14.88 14.75/8 –18 16.26 16.48 16.33/4 –16 19.43 19.68 19.57/8 –14 22.61 22.86 22.71 –12 25.76 26.04 26.0各種換算表管用螺絲基準寸法(mm)規格英制JIS(PT) 美式ASA(NPT)山數外徑有效徑山數外徑有效徑1/16 7.723 27 7.77 7.142 1/8 28 9.728 9.147 27 10.116 9.489 1/4 19 13.157 12.301 18 13.427 12.487 3/8 19 16.662 15.806 18 16.866 15.926 1/2 14 20.955 19.793 14 20.980 19.772 3/4 14 26.441 25.279 14 26.326 25.1171 11 33.249 31.770 111/2 33.932 31.46111/4 11 41.910 40.431 111/2 41.689 40.218 11/2 11 47.803 46.324 111/2 47.689 46.2872 11 59.614 58.135 111/2 59.796 58.32521/2 11 75.184 73.705 8 72.273 70.1593 11 87.884 86.405 8 88.182 86.06831/2 11 100.330 98.851 8 100.691 98.7764 11 113.030 111.551 8 113.548 111.43341/2 11 125.730 124.2515 11 138.430 136.951 8 141.3 138.41251/2 11 151.130 149.6516 11 163.830 162.351 8 168.3 165.2527 11 189.230 187.7518 11 214.630 213.151 8 219.1 215.901美制螺絲外徑公厘(mm)換算表規格吋mmNO. 0 0.0600 1.5241 0.0730 1.8542 0.0860 2.1843 0.0990 2.5154 0.1120 2.8455 0.1250 3.1756 0.1380 3.5058 0.1640 4.16610 0.1900 4.82612 0.2160 5.486山數節距換算表山數(每25.4mm) 節距mm 100 0.254080 0.317572 0.352864 0.396960 0.423356 0.453648 0.529244 0.577340 0.635036 0.705632 0.793828 0.907124 1.058320 1.270018 1.411116 1.587514 1.814313 1.953812 2.116711 2.309110 2.54009 2.82228 3.17507 3.62866 4.23335 5.08004 1/2 5.64444 6.35003 1/2 7.25713 1/4 7.81543 8.46672 7/8 8.83482 3/4 9.23642 5/8 9.67622 1/2 10.1600。

攻牙孔径表

攻牙孔徑表公制牙粗牙無溝絲攻適用孔徑螺紋牙套適用孔徑規格最小孔徑建議孔徑最小孔徑最大孔徑最小孔徑最大孔徑M 1*0.250.730.78M1.1*0.250.830.89M1.2*0.250.930.98M1.4*0.3 1.08 1.14 1.23 1.26M1.6*0.35 1.22 1.32M1.7*0.35 1.33 1.42 1.5 1.55M1.8*0.35 1.42 1.52M 2*0.4 1.57 1.67 1.77 1.83M2.2*0.45 1.71 1.84 1.95 2.01M2.3*0.4 1.87 1.97 2.07 2.13M2.5*0.45 2.01 2.14 2.25 2.31M2.6*0.45 2.12 2.23 2.35 2.41M 3*0.5 2.46 2.6 2.64 2.72 2.79 3.12 3.2M3.5*0.6 2.85 3.01 3.05 3.16 3.24M 4*0.7 3.24 3.42 3.47 3.6 3.69 4.17 4.3M4.5*0.75 3.69 3.88 3.92 4.07 4.17M 5*0.8 4.13 4.33 4.38 4.55 4.65 5.16 5.33 M 6*1.0 4.92 5.15 5.22 5.43 5.55 6.25 6.42 M 7*1.0 5.92 6.15 6.22 6.43 6.557.257.42 M 8*1.25 6.65 6.91 6.987.297.428.318.52 M 9*1.257.657.917.988.298.42M 10*1.58.388.688.759.159.310.3710.62 M 11*1.59.389.689.7510.1510.3M 12*1.7510.1110.4410.5311.0111.1912.4312.73 M 14*2.011.8412.2112.3114.4914.83 M 16*2.013.8414.2114.3116.4916.83 M 18*2.515.2915.7415.8518.5819.04 M 20*2.517.2917.7417.8520.5821.04 M 22*2.519.2919.7419.85M 24*3.020.7521.2521.38M 27*3.023.7524.2524.38M 30*3.526.2126.7726.92M 33*3.529.2129.7729.92M 36*4.031.6732.2732.42M 39*4.034.6735.2732.42M 42*4.537.1337.837.98M 45*4.540.1340.840.98M 48*5.042.5943.343.49公制牙細牙無溝絲攻適用孔徑螺紋牙套適用孔徑規格最小孔徑建議孔徑最小尺寸最大尺寸最小孔徑最大孔徑M2.5*0.35 2.12 2.22 2.3 2.35M 3*0.35 2.62 2.72 2.8 2.85M3.5*0.35 3.12 3.22 3.3 3.35M 4*0.5 3.46 3.6 3.64 3.72 3.79M4.5*0.5 3.96 4.1 4.14 4.22 4.29M 5*0.5 4.46 4.6 4.64 4.72 4.79M5.5*0.5 4.96 5.1 5.14 5.22 5.29M 6*0.75 5.19 5.38 5.42 5.57 5.67M 7*0.75 6.19 6.38 6.42 6.57 6.67M 8*1.0 6.927.157.227.437.558.258.42 M 8*0.757.197.387.427.577.67M 9*1.07.928.158.228.438.55M 9*0.758.198.388.428.578.67M 10*1.258.658.918.989.299.4310.3110.52 M 10*1.08.929.159.229.439.5510.2510.42 M 10*0.759.199.389.429.579.67M 11*1.259.529.89.88M 11*1.09.9210.1510.2210.4310.55M 11*0.7510.1910.3810.4210.5710.67M 12*1.510.3810.6810.7511.1511.312.3712.62 M 12*1.2510.6510.9110.9811.2911.4312.3112.52 M 12*1.010.9211.1511.2211.4311.55M 14*1.512.3812.6812.7514.3714.4 M 14*1.012.9213.1513.22M 15*1.513.3813.6813.75M 15*1.013.9214.1514.22M 16*1.514.3814.6814.7516.3716.62 M 16*1.014.9215.1515.22M 17*1.515.3815.6815.75M 17*1.015.9216.1516.22M 18*2.015.8416.2116.31M 18*1.516.3816.6816.7518.3718.62 M 18*1.016.9217.1517.22M 20*2.017.8418.2118.31M 20*1.518.3818.6818.7520.3720.62 M 20*1.018.9219.1519.22M 22*2.019.8420.2120.31M 22*1.520.3820.6820.75M 22*1.020.9221.1521.22M 24*2.021.8422.2122.31M 24*1.522.3822.6822.75M 24*1.022.9223.1523.22M 25*2.022.8423.2123.31M 25*1.523.3823.6823.75M 25*1.023.9224.1524.22M 26*2.023.6324.0824.18M 26*1.524.3824.6824.75M 27*2.024.8425.2125.31M 27*1.525.3825.6825.75M 27*1.025.9226.1526.22M 28*2.025.8426.2126.31M 28*1.526.3826.6826.75M 28*1.026.9227.1527.22M 30*3.026.7527.2527.38M 30*2.027.8428.2128.31M 30*1.528.3828.6828.75M 30*1.028.9229.1529.22M 32*2.029.8430.2130.31M 32*1.530.3830.6830.75M 33*3.029.7530.2530.38M 33*2.030.8431.2131.31M 33*1.531.3831.6831.75M 35*1.533.3833.6833.75M 36*3.032.7533.2533.38M 36*2.033.8434.2134.31M 36*1.534.3834.6834.75M 38*2.035.6236.0836.18M 38*1.536.3836.6836.75M 39*3.035.7536.2536.38M 39*2.036.8437.2137.31M 39*1.537.3837.6837.75M 40*3.036.7537.2537.38M 40*2.037.8438.2138.31M 40*1.538.3838.6838.75M 42*4.037.6738.2738.42M 42*3.038.7539.2539.38M 42*2.039.8440.2140.31M 42*1.540.3840.6840.75M 45*4.040.6741.2741.42M 45*3.041.7542.2542.38M 45*2.042.8443.2143.31M 45*1.543.3843.6843.75M 48*4.043.6744.2744.42M 48*3.044.7545.2545.38M 48*2.045.8446.2146.31M 48*1.546.3846.6846.75M 50*3.046.7547.2547.38M 50*2.047.8448.2148.31英制牙粗牙無溝絲攻適用孔徑螺紋牙套適用孔徑規格最小孔徑最大孔徑最小孔徑最大孔徑最小孔徑最大孔徑W 1/16-60 1.3W 3/32-48 1.9W 1/8 -40 2.6W 5/32-32 3.2W 3/16-24 3.8W 1/4 -205 5.1 5.63 5.77W 5/16-18 6.5 6.67.137.3W 3/8 -167.988.638.8W 7/16-149.39.410.0910.29W 1/2 -1210.510.711.611.82W 9/16 -121212.3W 5/8 -1113.513.7W 3/4 -1016.516.7W 7/8 -919.319.5W 1 -82222.4W1-1/8 -724.825W1-1/4 -72828.3W1-3/8 -630.330.5W1-1/2 -633.533.8W1-5/8 -535.736W1-3/4 -53939.2W1-7/8 -4.541.541.8W 2 -4.544.745美制牙粗牙無溝絲攻適用孔徑螺紋牙套適用孔徑規格最小孔徑最大孔徑最小孔徑最大孔徑最小孔徑最大孔徑NO. 1-64UNC 1.43 1.58 1.63 1.71NO. 2-56UNC 1.69 1.87 1.93 2.02NO. 3-48UNC 1.94 2.15 2.22 2.32NO. 4-40UNC 2.16 2.39 2.49 2.61 2.95 3.07 NO. 5-40UNC 2.49 2.7 2.82 2.92 3.25 3.38 NO. 6-32UNC 2.64 2.9 3.05 3.19 3.66 3.81 NO. 8-32UNC 3.3 3.53 3.71 3.83 4.32 4.47 NO.10-24UNC 3.68 3.96 4.23 4.37 5.05 5.21 NO.12-24UNC 4.34 4.6 4.88 5.021/4 -20UNC 4.98 5.26 5.63 5.77 6.63 6.785/16-18UNC 6.4 6.737.137.38.338.483/8 -16UNC7.88.158.638.89.9110.11 7/16-14UNC9.149.5510.0910.2911.5111.76 1/2 -13UNC10.5911.0211.611.8213.0813.34 9/16-12UNC11.9912.4514.6814.94 5/8 -11UNC13.3913.8716.5916.84 3/4 -10UNC16.3116.8419.8420.09 7/8 -9 UNC19.1819.761-8 UNC21.9722.611-1/8 -7 UNC24.6425.351-1/4 -7 UNC27.8128.521-3/8 -6 UNC30.3531.121-1/2 -6 UNC33.5334.291-3/4 -5 UNC38.9639.832- 4 1/2UNC44.6845.59美制牙細牙無溝絲攻適用孔徑螺紋牙套適用孔徑規格最小孔徑最大孔徑最小孔徑最大孔徑最小孔徑最大孔徑NO. 0-80UNF 1.18 1.31 1.34 1.41NO. 1-72UNF 1.47 1.61 1.65 1.72NO. 2-64UNF 1.76 1.91 1.96 2.04NO. 3-56UNF 2.02 2.2 2.26 2.35NO. 4-48UNF 2.27 2.46 2.55 2.64NO. 5-44UNF 2.55 2.74 2.85 2.95NO. 6-40UNF 2.82 3.02 3.15 3.24NO. 8-36UNF 3.4 3.61 3.77 3.86 4.32 4.44NO.10-32UNF 3.96 4.17 4.38 4.48 4.98 5.13NO.12-28UNF 4.5 4.72 4.97 5.081/4 -28UNF 5.36 5.59 5.83 5.95 6.53 6.715/16-24UNF 6.787.047.337.468.28.383/8 -24UNF8.388.648.939.089.789.967/16-20UNF9.7310.0310.3910.5411.4311.631/2 -20UNF11.3311.6111.9812.1213.0313.269/16-18UNF12.7513.085/8 -18UNF14.3514.6816.2616.483/4 -16UNF17.3217.6819.4319.687/8 -14UNF20.2720.671 -12UNF23.1123.571-1/8 -12UNF26.2926.751-1/4 -12UNF29.4629.921-3/8 -12UNF32.6433.11-1/2 -12UNF35.8136.27管用螺紋規格PF PS PT最小孔徑最大孔徑最小孔徑最大孔徑最小孔徑最大孔徑 1/88.578.858.58.648.118.251/411.4511.8911.3411.5510.7610.963/814.9515.414.8515.0514.2414.441/218.6319.1718.4918.7717.717.985/820.5921.133/424.1224.6623.9824.2623.123.387/827.8828.42130.2930.9330.1130.4729.129.46 1-1/834.9435.581-1/438.9539.5938.7739.1337.6237.981-1/244.8545.4944.6745.0343.5143.871-3/450.7951.43256.6657.356.4856.8455.0555.41規格NPT NPSC NPSM 1/88.48.89.0512929.830.5 1/411.111.511.85 1-1/437.738.539.2 3/814.314.915.3 1-1/24444.645.3 1/217.918.418.9525656.757.3 3/42323.824.3。

压铆件、攻丝、抽牙底孔表

为了减轻我司工艺工程师画展开图的工作量，同时也为了规范华为设计、文档管理以及方便后续更改，希望华为提供Pro/E模块.提供之模块必须按我方提供的如下参数建模:
1>折弯内R角统一为R0.5(除特殊情况外).
2>Pro/E模型按标准建,都能展开.
3>工艺缺口以2mm宽，孔一般为F2或F3为建模标准.
4>Pro/E模型必须与图面文档一致.
5>基本按我方提供的折弯参数表建模(参数表已发师菁处)
6>压铆类及攻丝类底孔应与我司提供的参数一致.(见下表)
压铆件、攻丝、抽牙底孔表。

螺牙攻牙底孔尺寸

攻牙後底孔 1.74 2.175 2.61
公差 (+0,-0.05) (+0,-0.05) (+0,-0.05)
螺牙攻牙底孔尺寸基準
螺牙尺螺距切削攻牙公差切削攻牙後公差擠壓攻牙前公差預沖孔寸前底孔尺底孔尺寸内孔尺寸 0.25 0.85 0.86 0.91 (+0,-0.04) M1 1 (+0,-0.03) (+0,-0.05) 0.5 1.02 1.03 1.09 (+0,-0.04) M1.2 1.2 0.25 (+0,-0.03) (+0,-0.05) 0.6 0.3 1.19 1.2 1.27 (+0,-0.04) M1.4 1.4 (+0,-0.03) (+0,-0.05) 0.7 1.36 1.38 1.46 (+0,-0.04) M1.6 1.6 0.35 (+0,-0.03) (+0,-0.05) 0.8 1.45 1.46 1.55 (+0,-0.04) M1.7 1.7 0.35 (+0,-0.03) (+0,-0.05) 0.85 0.4 1.7 1.72 1.82 (+0,-0.04) M2 2 (+0,-0.03) (+0,-0.05) 1 0.4 1.96 1.98 2.09 (+0,-0.04) M2.3 2.3 (+0,-0.03) (+0,-0.05) 1.15 2.13 2.15 2.28 (+0,-0.04) M2.5 2.5 0.45 (+0,-0.03) (+0,-0.05) 1.25 2.21 2.24 2.37 (+0,-0.04) M2.6 2.6 0.45 (+0,-0.03) (+0,-0.05) 1.3 0.5 2.55 2.58 2.73 (+0,-0.04) M3 3 (+0,-0.03) (+0,-0.05) 1.5 0.6 2.98 3.01 3.19 (+0,-0.04) M3.5 3.5 (+0,-0.03) (+0,-0.05)1.75 0.7 3.4 3.44 3.64 (+0,-0.04) M4 4 (+0,-0.03) (+0,-0.05) 2 0.8 4.25 4.3 4.55 (+0,-0.04) M5 5 (+0,-0.03) (+0,-0.05) 2.5 1 5.1 5.16 5.46 (+0,-0.04) M6 6 (+0,-0.03) (+0,-0.05) 3 1 5.95 6.02 6.37 (+0,-0.04) M7 7 (+0,-0.03) (+0,-0.05) 3.5 1.25 6.8 6.88 7.28 (+0,-0.04) M8 8 (+0,-0.03) (+0,-0.05) 4 1.5 8.5 8.6 9.1 (+0,-0.04) M10 10 (+0,-0.03) (+0,-0.05) 5 備註：切削攻牙前底孔尺寸=螺牙尺寸*0.85 ；擠壓攻牙前内孔尺寸=螺牙尺寸*0.91 ; 預沖孔=螺牙尺寸*0.5; 切削攻牙後底孔尺寸=螺牙尺寸*0.86;擠壓攻牙後内孔尺寸=螺牙尺寸*0.88 廣泰常用擠壓絲攻攻牙底孔螺牙尺寸螺距不鏽鋼材質其他（Al、SECC、SGCC等）公差 M2 0.4 1.87 1.82 (+0,-0.03) M2.5 0.45 2.35 2.275 (+0,-0.04) M3 0.5 2.85 2.73 (+0,-0.05) 備註：不鏽鋼材質=螺牙尺寸*0.94; 其他=螺牙尺寸*0.92;攻牙後底孔=螺牙尺寸*0.87 公差 (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) (+0.15,-0) 擠壓攻牙後內孔尺寸 0.88 1.06 1.23 1.41 1.5 1.76 2.03 2.2 2.29 2.64 3.08 3.52 4.4 5.28 6.16 7.04 8.8 公差 (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05) (+0,-0.05)

攻牙底孔的使用参数表

攻牙底孔的使用参数表一、螺紋下孔徑表RH 最小～最大RH 最小～最大精度(嵌合率％)精度(嵌合率％)NO. 2-56UNC4 1.96 ~ 2.02 (100~65)3 1.95 ~ 2.013-484 2.25 ~ 2.32 (100~65)3 2.23 ~ 2.314-405 2.52 ~ 2.60 (100~70)3 2.50 ~ 2.585-405 2.86 ~ 2.93 (100~70)3 2.83 ~ 2.916-325 3.09 ~ 3.17 (100~75)3 3.06 ~ 3.148-326 3.75 ~ 3.83 (100~75)4 3.74 ~ 3.8210-246 4.26 ~ 4.35 (100~80)4 4.24 ~ 4.32RH 最小～最大RH 最小～最大12-246 4.92 ~ 5.01 (100~80)4 4.90 ~ 4.96精度(嵌合率％)精度(嵌合率％)1/4-206 5.66 ~ 5.76 (100~80)4 5.64 ~ 5.74M 1 ×0.2520.87 ~ 0.89 (100~85)40.90 ~0.92 (100~80)5/16 -1877.18 ~ 7.29 (100~80)57.15 ~ 7.24(100~85)1.1×0.2520.97 ~ 0.99 (100~85)41.00 ~1.02 (100~80)3/8-1678.66 ~ 8.78 (100~80)58.63 ~ 8.73(100~85)1.2×0.252 1.07 ~ 1.09 (100~85)41.10 ~1.12 (100~80)7/16 -14710.11 ~10.25 (100~80)510.08 ~10.19(100~85)1.4×0.32 1.244~ 1.263 (100~85)41.270~ 1.294 (100~80)1/2-13810.62 ~11.78 (100~80)611.60 ~11.68(100~90)1.7×0.352 1.51 ~ 1.54 (100~80)41.54 ~ 1.58 (100~75)9/16 -121013.14 ~13.27 (100~85)813.11 ~13.24(100~85)2 ×0.42 1.78 ~ 1.82 (100~80)41.81 ~ 1.85 (100~75)5/8-111114.62 ~14.76 (100~85)814.58 ~14.67(100~90)2.3×0.42 2.08 ~ 2.12 (100~80)42.11 ~ 2.15 (100~75)3/4-101217.67 ~17.88 (100~80)917.63 ~17.74(100~90)2.5×0.452 2.25 ~ 2.29 (100~80)42.28 ~ 2.33 (100~75)7/8-91220.68 ~20.85 (100~85)920.64 ~20.75(100~90)2.6×0.452 2.35 ~ 2.39 (100~80)42.38 ~ 2.43 (100~75)1-81323.65 ~23.84 (100~85)1023.61 ~23.74(100~90)3 ×0.53 2.74 ~ 2.78 (100~80)52.76 ~ 2.81 (100~75)3.5×0.63 3.18 ~ 3.21 (100~85)53.20 ~ 3.26 (100~75)4 ×0.74 3.63 ~ 3.67 (100~85)63.65 ~ 3.70 (100~85)5 ×0.844.57 ~ 4.62 (100~85)64.59 ~ 4.66 (100~80)6 ×145.45 ~ 5.51 (100~85)75.48 ~ 5.57 (100~80)7 ×146.45 ~ 6.51 (100~85)76.48 ~ 6.57 (100~80)8 ×1.2557.31 ~ 7.38 (100~85)77.34 ~ 7.41 (100~85)8 ×147.45 ~ 7.51 (100~85)77.48 ~ 7.57 (100~80)(2)基於JIS B 0211-1982標準螺紋尺寸螺紋尺寸1級螺紋用下孔徑2級螺紋用下孔徑8、公制螺紋(NRT) (單位：mm)2B 級螺紋用下孔徑3B 級螺紋用下孔徑9、美制粗牙螺紋(NRT) (單位：mm)10 ×1.559.16 ~ 9.22 (100~90)79.18 ~ 9.28 (100~85)10 ×1.2559.31 ~ 9.38 (100~85)79.34 ~ 9.41 (100~85)10 ×159.46 ~ 9.52 (100~85)79.48 ~ 9.57 (100~80)12 ×1.75511.01 ~11.08 (100~90)811.05 ~11.15 (100~85)12 ×1.5511.16 ~11.22 (100~90)711.18 ~11.28 (100~85)12 ×1.25511.31 ~11.38 (100~85)711.34 ~11.41 (100~85)12 ×1511.46 ~11.52 (100~85)711.48 ~11.57 (100~80)14 ×2612.83 ~12.95 (100~90)1012.92 ~13.04 (100~85)14 ×1.5513.16 ~13.22 (100~90)913.21 ~13.30 (100~85)16 ×2614.87 ~14.95 (100~90)1014.92 ~15.04 (100~85)16 ×1.5515.16 ~15.22 (100~90)915.21 ~15.30 (100~80)18 ×2.5616.57 ~16.67 (100~90)1116.63 ~16.78 (100~85)18 ×1.5617.17 ~17.23 (100~90)1017.22 ~17.31 (100~85)20 ×2.5618.57 ~18.67 (100~90)1118.63 ~18.78 (100~85)20 ×1.5619.17 ~19.23 (100~90)1019.22 ~19.31 (100~85)螺紋尺寸RH 精度最小～最大(嵌合率％)RH 最小～最大RH 最小～最大PF 1/869.24~ 9.35 (100~80)精度(嵌合率％)精度(嵌合率％)1/4712.41~12.62 (100~75)NO. 2-64UNF3 1.98 ~2.04 (100~65)2 1.97 ~ 2.03 (100~65)3/8715.92~16.12 (100~75)3-564 2.29 ~ 2.35 (100~65)3 2.28 ~ 2.34 (100~65)1/2819.93~20.15 (100~80)4-484 2.57 ~ 2.64 (100~70)3 2.56 ~ 2.63 (100~70)3/4825.41~25.64 (100~80)5-444 2.88 ~ 2.95 (100~70)3 2.87 ~ 2.94 (100~70)6-405 3.19 ~ 3.26 (100~70)3 3.16 ~ 3.22 (100~75)8-365 3.80 ~ 3.88 (100~75)4 3.79 ~ 3.86 (100~75)10-325 4.41 ~ 4.48 (100~80)4 4.40 ~ 4.46 (100~80)RH 最小～最大RH 最小～最大12/285 5.00 ~ 5.08 (100~80)4 4.99 ~ 5.06 (100~80)精度(嵌合率％)精度(嵌合率％)1/4-285 5.86 ~ 5.93 (100~80)4 5.85 ~ 5.92 (100~80)M 1 ×0.2520.858~0.879 (100~85)40.858~0.887 (100~80)5/16-2467.38 ~ 7.46 (100~80)57.36 ~ 7.43 (100~85) 1.2×0.252 1.058~1.079 (100~85)4 1.058~1.087 (100~80)3/8-2468.96 ~ 9.05 (100~80)58.95 ~ 9.02 (100~85) 1.4×0.32 1.23 ~1.26 (100~85)4 1.23 ~1.26 (100~80)7/16-20710.44 ~10.54 (100~80)510.41 ~10.49 (100~85) 1.6×0.352 1.40 ~1.44 (100~80)4 1.40 ~1.45 (100~75)1/2-20712.02 ~12.12 (100~80)512.00 ~12.05 (100~90) 1.7×0.35－ 1.50 ~1.54 (100~80)4 1.50 ~1.55 (100~75)9/16-18913.55 ~13.66 (100~80)713.53 ~13.58 (100~90) 1.8×0.352 1.60 ~1.64 (100~80)4 1.60 ~1.65 (100~75)5/8-18915.14 ~15.25 (100~80)715.11 ~15.17 (100~90) 2 ×0.42 1.77 ~1.82 (100~80)4 1.77 ~1.82 (100~80)3/4-161018.22 ~18.32 (100~85)718.18 ~18.25 (100~90) 2 ×0.252 1.858~1.887 (100~80)－ 1.858~1.887 (100~80)7/8-141121.27 ~21.38 (100~85)821.23 ~21.27 (100~95) 2.3×0.4－ 2.07 ~2.12 (100~80)4 2.07 ~2.13 (100~75)1-121224.28 ~24.41 (100~85)924.24 ~24.32 (100~90)2.5×0.453 2.24 ~2.30 (100~80)5 2.24 ~2.31 (100~75)2.6×0.45－ 2.34 ~2.40 (100~80)5 2.34 ~2.41 (100~75)3 ×0.63 2.72 ~2.73 (100~90)5 2.66 ~2.73 (100~90)螺紋尺寸RH 精度最小～最大(嵌合率％) 3 ×0.55 2.72 ~2.77 (100~80)6 2.72 ~2.78 (100~75)M 3 ×0.533.39~3.43 (100~80)3 ×0.353 2.80 ~2.84 (100~80)5 2.80 ~2.85 (100~75)4 ×0.74 4.54~4.58 (100~85) 3.5×0.633.16 ~3.21 (100~85)53.16 ~3.25 (100~75)2B 級螺紋用下孔徑3B 級螺紋用下孔徑二、螺紋下孔徑表(無屑絲攻用)1、美制細牙螺紋(NRT) (單位：mm)2、英制管用平行螺紋(NRT) (單位：mm)螺紋尺寸1級螺紋用下孔徑2級螺紋用下孔徑3、公制螺紋(HRT) (單位：mm)4、公制粗牙螺紋 HL-NRT (單位：mm)5 ×0.84 5.61~5.66 (100~85) 4 ×0.753 3.57 ~3.64 (100~85)6 3.57 ~3.64 (100~85)6 ×14 6.75~6.81 (100~85) 4 ×0.76 3.60 ~3.66 (100~85)7 3.60 ~3.66 (100~85)8 ×1.2558.93~9.01 (100~85)4 ×0.53 3.71 ~3.77 (100~80)6 3.71 ~3.79 (100~75)10 ×1.5511.11~11.17 (100~90)5 ×0.93 4.49 ~4.59 (100~85)7 4.49 ~4.59 (100~85)10 ×1.25510.93~11.01 (100~85) 5 ×0.83 4.55 ~4.62 (100~85)8 4.55 ~4.64 (100~80)12 ×1.75513.28~13.17 (100~90) 5 ×0.53 2.72 ~4.77 (100~80)6 4.72 ~4.79 (100~75)12 ×1.5513.11~13.17 (100~90) 6 ×14 5.43 ~5.52 (100~85)7 5.43 ~5.55 (100~80)12 ×1.25512.93~13.01 (100~85)6 ×0.753 5.57 ~5.64 (100~85)75.57 ~5.66 (100~80)最小直徑最大直徑最小直徑最大直徑M 2.5 × 0.45 2.6 2.65 2.6M 10 × 110.2510.4210.32.6 × 0.45 2.7 2.75 2.710 × 1.2510.3110.5210.43 × 0.53.12 3.2 3.112 × 1.2512.3112.5212.54 × 0.7 4.17 4.3 4.212 × 1.512.3712.6212.55 × 0.8 5.16 5.33 5.214 × 1.514.3714.6214.56 × 1 6.25 6.42 6.316 × 1.516.3716.6216.58 × 1.258.318.528.418 × 1.518.3718.6218.510 × 1.510.3710.6210.520 × 1.520.3720.6220.512 × 1.7512.4312.7312.520 × 220.4720.8320.514 × 214.4914.8314.522 × 1.522.3722.6222.516 × 216.4916.8316.524 × 1.524.3724.6224.518 × 2.518.5819.041924 × 224.4724.8324.520 × 2.520.5821.042130 × 1.530.3730.6230.522 × 2.522.5823.042324 × 2.524.725.2525最小直徑最大直徑最小直徑最大直徑NO. 2 – 56UNC 2.29 2.39 2.3NO. 4 – 48UNF 2.97 3.0533 – 48 2.64 2.74 2.7 6 – 40 3.66 3.78 3.74 – 40 2.95 3.0738 – 36 4.32 4.44 4.45 – 40 3.25 3.38 3.310 – 32 4.98 5.1356 – 32 3.66 3.81 3.71/4 – 28 6.53 6.71 6.68 – 32 4.32 4.47 4.45/16 – 248.28.388.210 – 24 5.05 5.21 5.13/8 – 249.789.969.812 – 24 5.61 5.77 5.77/16 – 2011.4311.6311.51/4 – 20 6.63 6.78 6.71/2 – 2013.0313.2613.15/16 – 88.338.488.49/16 – 1814.6614.8814.73/8 – 169.9110.11105/8 – 1816.2616.4816.37/16 – 1411.5111.7611.53/4 – 1619.4319.6819.51/2 – 1313.0813.3413.17/8 – 1422.6122.8622.79/16 – 1214.6814.9414.7 1 – 1225.7626.0426螺紋尺寸下孔徑鑽頭直徑2、公制細牙螺紋 (單位：mm)螺紋尺寸下孔徑鑽頭直徑三、螺紋下孔徑表(护套螺紋用)1、公制粗牙螺紋 (單位：mm)螺紋尺寸下孔徑鑽頭直徑4、美制細牙螺紋 (單位：mm)螺紋尺寸下孔徑鑽頭直徑3、美制粗牙螺紋 (單位：mm)規格吋mm NO. 00.06 1.524山數外徑有效徑山數外徑有效徑10.073 1.8541/167.723277.87.14220.086 2.1841/8289.7289.14727109.48930.099 2.5151/41913.15712.301181312.48740.112 2.8453/81916.66215.806181715.92650.125 3.1751/21420.95519.793142119.77260.138 3.5053/41426.44125.279142625.11780.164 4.16611133.24931.77111/23431.461100.19 4.8261 1/41141.9140.431111/24240.218120.2165.4861 1/21147.80346.324111/24846.28721159.61458.135111/26058.325山數節距換算表2 1/21175.18473.70587270.159山數(每25.4mm)節距mm 31187.88486.40588886.0681000.2543 1/211100.3398.851810198.776800.3175411113.03111.5518114111.433720.35284 1/211125.73124.251640.3969511138.43136.9518141138.412600.42335 1/211151.13149.651560.4536611163.83162.3518168165.252480.5292711189.23187.751440.5773811214.63213.1518219215.901400.635360.7056320.7938280.907124 1.058320 1.2718 1.411116 1.587514 1.814313 1.953812 2.116711 2.309110 2.549 2.82228 3.1757 3.62866 4.23335 5.084 1/2 5.64444 6.353 1/27.25713 1/47.815438.46672 7/88.8348美制螺絲外徑公厘(mm)換算表規格英制JIS(PT)美式ASA(NPT)各種換算表管用螺絲基準寸法(mm)2 3/49.2364 2 5/89.6762 2 1/210.16。

攻牙底孔参数

攻牙底孔的使用参数表
一、螺紋下孔徑表
1、公制粗牙螺紋 JIS B 0209-1982(單位：mm)
註(1)M1.4以下等級：5H、M1.6以上等級：6H (2)基於JIS B 0209-1982標準2、公制細牙螺紋-01 JIS B 0211-1982(單位：mm)
單位：mm)
(2)基於JIS B 0211-1982標準
3、美制粗牙螺紋 (單位：mm)
4、美制細牙螺紋 (單位：mm)
5、英制粗牙螺紋 (單位：mm)
6、英制管用螺紋 (單位：mm)
7、美制管用耐密斜行螺紋(NPTF‧NPSF) (單位：mm)
8、公制螺紋(NRT) (單位：mm)
二、螺紋下孔徑表(無屑絲攻用)
1、美制細牙螺紋(NRT) (單位：mm)
2、英制管用平行螺紋(NRT) (單位：mm)
3、公制螺紋(HRT) (單位：mm)
4、公制粗牙螺紋 HL-NRT (單位：mm)
三、螺紋下孔徑表(護套螺紋用)
1、公制粗牙螺紋 (單位：mm)
2、公制細牙螺紋 (單位：mm)
3、美制粗牙螺紋 (單位：mm)
mm)
各種換算表
美制螺絲外徑公厘(mm)換算表
山數節距換算表。

螺纹攻牙底孔选用作业重点标准

4.1.2 非常規攻牙型號旳驗証﹔
4.2【生產課】
4.2.1標準文献旳執行與回饋﹔
5. 作業內容﹕
5.1 絲攻簡介
5.1.1 絲攻類型
A.螺旋式
絲攻外型如鑽頭﹐螺旋式上升﹐此種絲攻其優點為﹐排屑方式為上排屑﹐一般用於盲孔攻牙
B.切屑式
絲攻外型有三外凹槽﹐凹槽旳作用為排屑之用﹐其排屑方式為下排屑﹐即切屑從下排出﹐一般用於通孔攻牙
DATE
日期
****** 修訂履歷 ******
版次
ECN NO.
修訂頁次
備註
A
新版發行
B
C
D
E
F
G
H
J
K
L
M
N
P
Q
R
S
T
U
V
W
Y
Z
1. 目旳﹕
作業標准化﹐提高效率﹐保証品質。.
2. 適用范圍﹕
NWEIII產品事業處樣品廠
3. 引用文献﹕
無
4. 重要職責與權限﹕
4.1【製工課】﹕
4.1.1攻牙底孔標準旳建立與維護﹔
5.2.1公制牙抽牙
規格尺寸
底孔規格
規格尺寸
底孔規格
規格尺寸
底孔規格
M1*0.25
0.78
M4*0.5
3.62
M7*0.5
6.6
M1.2*0.25
0.98
M4*0.7
3.43
M7*0.75
6.4
M1.4*0.3
1.14
M4*0.75
3.31
M7*1
6.2
M1.6*0.35
1.32
M4.5*0.5
4.12

最全的攻牙底孔参数

4.959 5.188 6.188 6.917 7.188 7.917 8.188 8.647 8.917 9.188 9.917 10.188 10.376 10.647 10.917 12.376 12.917 13.376 13.917 14.376 14.917 15.376 15.917
5.099 5.378 6.378 7.153 7.378 8.153 8.378 8.912 9.153 9.378 10.153 10.378 10.676 10.912 11.153 12.676 13.153 13.676 14.153 14.676 15.153 15.676 16.153
18
18.2 (85%)
18.5
18.62 (85%)
19
19.13 (80%)
20
20.2 (85%)
20.5
20.62 (85%)
21
21.13 (80%)
22
22.2 (85%)
22.5
22.62 (85%)
23
23.13 (80%)
23
23.2 (85%)
23.5
23.62 (85%)
24
24.13 (80%)
攻牙底孔的使用参数表
1、公制粗牙螺紋
螺纹尺寸
钻头直径
M 1 × 0.25 1.1 × 0.25 1.2 × 0.25 1.4 × 0.3 1.6 × 0.35 1.8 × 0.35
2 × 0.4 2.2 × 0.45 2.5 × 0.45
3 × 0.5 3.5 × 0.6 4 × 0.7 4.5 × 0.75 5 × 0.8
3、美制粗牙螺紋
螺纹尺寸
钻头直径 2B级螺纹下孔徑

攻牙钻底孔大小的计算方法

攻牙钻底孔大小的计算方法按螺纹加工的成型原理可分为切削螺纹加工和挤压螺纹加工（挤牙）。

成型原理不同，我们所使用的螺纹刀具不同，钻的底孔大小也不同。

我们先来讨论切削螺纹加工，这是最普通的螺纹加工方法，从字面意思可以理解，是利用金属切削原理加工而来的。

根据我自己的工作经历，以往我所打孔的大小是螺纹外径－螺距的数值。

根据材料属性以及加工性能不同，硬度偏高不好加工的材料，会把孔稍微打大点。

要打大多少呢我给大家一个范围参考公式，底孔大小＝螺纹外径－0.85~0.95倍螺距。

例如我要加工不锈钢M10螺纹，底孔大小＝10-0.9*1.5＝8.65，最大孔打到８.７也是没问题的。

具体给多少，参考孔大小，材料的加工性能。

下图是切削丝攻，在机床上攻牙一般用这种带螺旋槽的。

接着来讨论挤压螺纹加工，也称无屑攻丝，是通过刀具对材料的挤压而形成的螺纹，底孔大小自然要比切削型的大。

一般地算法是：底孔大小＝螺纹外径－螺距/２。

最大值的参考范围是：底孔大小＝螺纹外径－0.425~0.475*螺距。

以M3的孔为例：3-0.425*0.5＝2.79，打的孔不要超过2.79。

使用挤牙时，孔不能偏小，偏小的话，容易断丝锥。

如果对螺纹有拉力要求，还是采用切削攻牙靠谱。

下图是挤牙丝攻图片。

上面介绍的是公制螺纹的底孔算法。

如果碰到英制和美制的螺纹呢？第一，可以查表，这里我不作考虑；第二，通过换算成公制螺纹，再用上面的公式计算。

一般英制螺纹换算成公制的算法。

这里我通过一个实例来讲解，以3/8-16螺纹为例。

螺纹外径＝３（分子）÷８（分母）*25.4（１英寸＝25.4毫米）＝9.525；螺距＝25.4÷16（每英寸牙数）＝1.5875（公制螺距）。

大家通过计算后，再查表核实，这里是否正确。

一般美制螺纹换算成公制的算法。

以8-32UNC螺纹为例，螺纹外径＝25.4*（0.06+0.013*8（８是８－３２中的））＝4.1656；螺距＝25.4÷32＝0.79375。

底孔标准

4.0 5.0 6.8 8.6 10.2
直攻牙底孔=牙紋規格-牙紋大小例如:M8*1.25的那麼底孔大小為=8 -1.25=6.75(6.8)
抽孔(鉚接用的和莎拉配合)外經: 底孔＝(要求外經-2T)/2 + 系數系數=0.4T(一般的差不多) 例:要求抽孔外經3.2 板厚T=0.6 . 那麼此底孔為(3.2-2*0.6)/2+0.4*0.6=1.24 (一般1.0-1.3都可以) 抽孔鉚接：T=0.5~0.8 抽孔外經用3.2 (莎拉3.5) T=1.0~1.2~1.5 抽孔外經3.8(莎拉4.0) 鉚接抽孔外經:一般為4T (T>=0.8(當T<0.8時抽孔為3.2)) T=1.0 /1.2抽孔外經3.8-4.0都可(莎拉孔為4.0/4.2) 螺母 M3*0.5 4.3 M4*0.7 5.5 M5*0.8 6.5 M6*1.0 8.8 M8*1.25 10.5 M10*1.5 14.1 #6-32 4.8 3/8 12.7 #6-32 6.5(壓鉚) 5.8(翻邊) PF32-8-32 6.4 PF11 M5-2 8.0
2.0板用-1 3.0板用-2
低腳1.5 高腳2.2
代表六角螺帽)
倍
表
預沖孔 1.2 1.5 1.7 2.4 1.7
配合)外經: 要求外經-2T)/2 + 系數數=0.4T(一般的差不多) UNC代表粗牙 UNF代表細牙板厚T=0.6 . 0.6)/2+0.4*0.6=1.24 以) 抽孔外經用3.2 (莎拉3.5) ~1.5 抽孔外經3.8(莎拉4.0) 4T (T>=0.8(當T<0.8時抽孔外經3.8-4.0都可(莎拉孔
螺柱 M3*0.5(外經4.2) 3.5M3*0.5(外經5.4) M4*0.7 M5*0.8 #6-32