圆锥管螺纹表
螺纹对照表
外螺纹 下偏差 A级 -0.107 -0.125 -0.125 -0.142 -0.142 -0.142 -0.142 -0.180 -0.180 -0.180 -0.180 -0.180 -0.180 -0.217 -0.217 -0.217 -0.217 -0.217 -0.217 B级 -0.214 -0.250 -0.250 -0.284 -0.284 -0.284 -0.284 -0.360 -0.360 -0.360 -0.360 -0.360 -0.360 -0.434 -0.434 -0.434 -0.434 -0.434 -0.434
0.581 9.728 9.147 8.566 0.856 13.157 12.301 11.445 0.856 16.662 15.806 14.950 1.162 20.955 19.793 18.631 1.162 22.911 21.749 20.587 1.162 26.441 25.279 24.117 1.162 30.201 29.039 27.877 1.479 33.249 31.770 30.291 1.479 37.897 36.418 34.939 1.479 41.910 40.431 38.952 1.479 47.803 46.324 44.845 1.479 53.746 52.267 50.788 1.479 59.614 58.135 56.656 1.479 65.710 64.231 62.752 1.479 75.184 73.705 72.226 1.479 81.534 80.055 78.576 1.479 87.884 86.405 84.926 1.479 100.330 98.851 97.372 1.479 113.030 111.551 110.072
圆锥管螺纹有关尺寸参数表
圆锥管螺纹有关尺寸参数表二
内螺纹 最小内径
外螺纹 最大外径 小头外径
8.09 10.42 13.84 17.08 22.39 28.17 36.89 42.93 54.88 65.44 81.22 106.47
圆锥管螺纹有关尺寸参数表一
公 称 螺纹 通 代号 径
DN in
6
1/8
8
1/4
10 3/8
15 1/2
20 3/4
25 1
32 11/4 40 11/2
50 2
65 21/2
80 3
100 4
每寸 牙数
27 18 18 14 14 11.5 11.5 11.5 11.5 8 8 8
螺距
0.911 1.411 1.411 1.814 1.814 2.209 2.209 2.209 2.209 3.175 3.175 3.175
60°圆锥管螺纹(NPT) (Z)
牙高
0.753 1.129 1.129 1.451 1.451 1.767 1.767 1.767 1.767 2.540 2.540 2.540
内螺纹
螺纹有效长度
大径 小径
10.24 13.62 17.06 21.22 26.57 33.23 41.99 48.05 60.09 72.70 88.61 113.97
48.60
47.01
50
2
11
2.309
1.47 9
59.61 56.66
22.80
23.38
8.10
密封管螺纹标准尺寸表
密封管螺纹标准尺寸表1.NPT（National Pipe Thread）美国标准60度锥管螺纹NPT螺纹分为1/8、1/4、1/2、3/4、1等几个系列，规格有1/8-36、1/4-19、1/2-18、3/4-14、1-13和2寸系列，常用规格如下：NPT 1/8-27 UNF-2B：大径为9.075mm，小径为7.786mm，螺距为0.907mm。
NPT 1/4-20 UNF-2B：大径为13.616mm，小径为11.447mm，螺距为0.794mm。
NPT 1/2-18 UNF-2B：大径为20.955mm，小径为18.632mm，螺距为0.794mm。
NPT 3/4-14 UNF-2B：大径为26.441mm，小径为24.117mm，螺距为0.794mm。
NPT 1-13 UNF-2B：大径为33.699mm，小径为30.580mm，螺距为0.794mm。
NPT 2：大径为39.956mm，小径为36.575mm，螺距为0.794mm。
2.Rc（Restricted Cone）圆锥管螺纹Rc螺纹的牙顶圆弧面不得超过螺纹直径的1/2，螺纹牙底为圆弧形，尺寸代号为数字加字母R，后面标注螺纹的大径与管子的通径尺寸。
例如：Rc 1/2：大径为20.955mm，小径为18.632mm，螺距为0.794mm。
3.RP（Restricted Parallel）圆柱管螺纹RP螺纹的牙顶圆弧面不得超过螺纹直径的1/2，牙底为平直面。
尺寸代号为数字加字母P，后面标注螺纹的大径与管子的通径尺寸。
例如：RP 1/2：大径为20.955mm，小径为18.632mm，螺距为0.794mm。
需要注意的是，不同国家的标准可能存在差异，因此在实际应用中需要根据具体标准进行选择。
同时，为了保证螺纹的密封性能和使用寿命，需要选择合适的密封材料和润滑剂进行配合使用。
英制锥管螺纹 英制锥螺纹
以英制表示的螺纹（上面的2、3、4三种），螺距是以每英寸多少牙表示的，同样是1/2''，G、R和NPT的外径和螺距是有差别的，实际安装的时候，有时混用没问题，但要尽量避免。特别是在防爆场所（防爆对间隙有要求，螺纹不匹配不密封可传爆）和对密封性有严格要求的地方（如室外）。
OK，又说完了。
管螺纹名称、代号对照表
新国标代号意义：
G—不用螺纹密封的圆柱管螺纹
R—用螺纹密封的管螺纹
RP—圆柱内螺纹
RC—圆锥内螺纹
R —圆锥外螺纹
NPT—60°圆锥管螺纹
旧国标代号意义：
G—圆柱螺纹
ZG—圆锥螺纹
Z—圆锥螺纹
国外标准代号意义：
BSP—-------英制管螺纹
2½ 8 3.175 72.699 67.619 17.323 2
3 8 3.175 88.608 83.528 19.456 2
1/2 14 1.814 20.955 18.631 8.2 13.2
3/4 14 1.814 26.441 24.117 9.5 14.5
1 11 2.309 33.249 30.291 10.4 16.8
1¼ 11 2.309 41.910 38.952 12.7 19.1
5 8 3.175 140.952 135.872 23.800 2
6 8 3.175 167.792 162.712 24.333 2
1 11.5 2.209 33.228 29.694 10.160 3
1¼ 11.5 2.209 41.985 38.451 10.668 3
管螺纹尺寸对照表
55°圆锥管螺纹型式和尺寸螺纹代号基本尺寸英寸大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高度H1圆弧尺寸r底孔尺寸mmR 1/16 1/16＂7.723 0.907 28 7.142 6.561 0.581 0.125 6.4 R 1/8 1/8＂9.728 0.907 28 9.147 8.566 0.581 0.125 8.4 R 1/4 1/4＂13.157 1.337 19 12.301 11.445 0.856 0.184 11.2 R 3/8 3/8＂16.662 1.337 19 15.806 14.950 0.856 0.184 14.75 R 1/2 1/2＂20.955 1.814 14 19.793 18.631 1.162 0.249 18.25 R 3/4 3/4＂26.441 1.814 14 25.279 24.117 1.162 0.249 23.75 R 1 1＂33.249 2.309 11 31.77 30.291 1.479 0.317 30 R 1 1/4 1 1/4＂41.910 2.309 11 40.431 38.952 1.479 0.317 38.5 R 1 1/2 1 1/2＂47.803 2.309 11 46.324 44.845 1.479 0.317 44.5 R 2 2＂59.614 2.309 11 58.135 56.656 1.479 0.317 56 R 2 1/2 2 1/2＂75.184 2.309 11 73.705 72.226 1.479 0.317 71 R 3 3＂87.884 2.309 11 86.405 84.926 1.479 0.317 85.5 R 4 4＂113.030 2.309 11 111.551 110.072 1.479 0.317 110.5 R 5 5＂138.430 2.309 11 136.951 135.472 1.479 0.317 136 R 6 6＂163.830 2.309 11 162.351 160.872 1.479 0.317 161.555°圆柱管螺纹的型式和尺寸British Pipe Thread (惠氏管螺纹) -- 圆柱(BSPP/BSPF)螺纹代号基本尺寸大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高度H1底孔尺寸mmG 1/8 1/8＂9.728 0.907 28 9.147 8.566 0.581 8.7 G 1/4 1/4＂13.157 1.337 19 12.301 11.445 0.856 11.6 G 3/8 3/8＂16.662 1.337 19 15.806 14.95 0.856 15 G 1/2 1/2＂20.955 1.814 14 19.793 18.631 1.162 19 G 5/8 5/8＂22.911 1.814 14 21.749 20.587 1.162 20.75 G 3/4 3/4＂26.441 1.814 14 25.279 24.117 1.162 24.5 G 7/8 7/8＂30.201 1.814 14 29.039 27.877 1.162 28 G 1 1＂33.249 2.309 11 31.77 30.291 1.479 30.5 G 1 1/8 1 1/8＂37.897 2.309 11 36.418 34.939 1.479 35 G 1 1/4 1 1/4＂41.91 2.309 11 40.431 38.952 1.479 39.5 G 1 3/8 1 3/8＂44.323 2.309 11 42.844 41.365 1.479 41.5 G 1 1/2 1 1/2＂47.803 2.309 11 46.324 44.845 1.479 45 G 1 3/4 1 3/4＂53.746 2.309 11 52.267 50.788 1.479 51G 2 2＂59.614 2.309 11 58.135 56.656 1.479 57 G 2 1/4 2 1/4＂65.71 2.309 11 64.231 62.752 1.479 63 G 2 1/2 2 1/2＂75.184 2.309 11 73.705 72.226 1.479 72.5 G 2 3/4 2 3/4＂81.534 2.309 11 80.055 78.576 1.479 79 G 3 3＂87.884 2.309 11 86.405 84.926 1.479 85.5 G 3 1/4 3 1/4＂93.98 2.309 11 92.501 91.022 1.479 91 G 3 1/2 3 1/2＂100.33 2.309 11 98.351 97.372 1.479 97.75 G 3 3/4 3 3/4＂106.68 2.309 11 105.201 103.722 1.479 104 G 4 4＂113.03 2.309 11 111.55 110.072 1.479 110.5 G 4 1/2 4 1/2＂125.73 2.309 11 124.251 122.772 1.479 123 G 5 5＂138.43 2.309 11 136.951 135.472 1.479 136 G 5 1/2 5 1/2＂151.13 2.309 11 149.651 148.172 1.479 148.5 G 6 6＂163.83 2.309 11 162.351 160.872 1.479 161.5英制普通螺纹(惠氏螺纹) -- 粗牙(BSW)名义尺寸Ww 牙型代号大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高H1底孔直径mm1/16＂BSW 1.587 0.423 60 1.315 1.050 0.270 1.15 3/32＂BSW 2.381 0.529 48 2.041 1.703 0.338 1.90 1/8＂BSW 3.175 0.635 40 2.768 2.362 0.406 2.50 5/32＂BSW 3.969 0.793 32 3.459 2.952 0.507 3.20 3/16＂BSW 4.762 1.058 24 4.084 3.407 0.677 3.70 7/32＂BSW 5.556 1.058 24 4.878 4.201 0.677 4.50 1/4＂BSW 6.350 1.270 20 5.537 4.724 0.813 5.10 5/16＂BSW 7.938 1.411 18 7.034 6.131 0.904 6.50 3/8＂BSW 9.525 1.588 16 8.509 7.492 1.017 7.90 7/16＂BSW 11.113 1.814 14 9.951 8.789 1.162 9.20 1/2＂BSW 12.700 2.117 12 11.345 9.990 1.355 10.40 5/8＂BSW 15.876 2.309 11 14.397 12.918 1.479 13.40 3/4＂BSW 19.051 2.540 10 17.424 15.798 1.627 16.25 7/8＂BSW 22.226 2.822 9 20.419 18.611 1.807 19.25 1＂BSW 25.400 3.175 8 23.368 21.335 2.033 22.00 1 1/8＂BSW 28.576 3.629 7 26.253 23.929 2.324 24.50 1 1/4＂BSW 31.751 3.629 7 29.428 27.104 2.324 27.25 1 3/8＂BSW 34.926 4.233 6 32.215 29.505 2.711 30.25 1 1/2＂BSW 38.100 4.233 6 35.391 32.680 2.711 33.50 1 5/8＂BSW 41.277 5.080 5 38.024 34.771 3.253 35.50 1 3/4＂BSW 44.452 5.080 5 41.199 37.946 3.253 38.50 1 7/8＂BSW 47.627 5.645 4 1/2 44.012 40.398 3.614 41.25 2＂BSW 50.802 5.645 4 1/2 47.187 43.573 3.614 44.502 1/4＂BSW 57.152 6.350 4 53.086 49.020 4.066 50.00 2 1/2＂BSW 63.502 6.350 4 59.436 55.370 4.066 56.00 2 3/4＂BSW 69.853 7.257 3 1/2 65.205 60.558 4.647 61.50 3＂BSW 76.203 7.257 3 1/2 71.556 66.909 4.647 68.00 3 1/4＂BSW 82.553 7.816 3 1/4 77.548 72.544 5.005 73.75 3 1/2＂BSW 88.903 7.816 3 1/4 83.899 78.894 5.005 80.00 3 3/4＂BSW 95.254 8.467 3 89.832 84.410 5.422 85.50 4＂BSW 101.604 8.467 3 96.182 90.760 5.422 92.00 4 1/4＂BSW 107.954 8.835 2 7/8 102.297 96.639 5.657 98.00 4 1/2＂BSW 114.304 8.835 2 7/8 108.647 102.990 5.657 104.20 4 3/4＂BSW 120.665 9.237 2 3/4 114.740 108.625 5.915 110.00 5＂BSW 127.005 9.237 2 3/4 121.090 115.176 5.915 116.50 5 1/4＂BSW 133.355 9.677 2 5/8 127.159 120.963 6.196 122.50 5 1/2＂BSW 139.705 9.677 2 5/8 133.509 127.313 6.196 128.50 5 3/4＂BSW 146.055 10.160 2 1/2 139.549 133.043 6.506 134.50 6＂BSW 152.406 10.160 2 1/2 145.900 139.394 6.506 141.00英制普通螺纹(惠氏螺纹) -- 细牙(BSW)名义尺寸BSF 牙型代号大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高H1底孔直径mm3/16 BSF 4.763 0.794 32 4.255 3.747 0.508 4.00 7/32 BSF 5.556 0.907 28 4.975 4.394 0.581 4.60 1/4 BSF 6.350 0.977 26 5.725 5.100 0.625 5.30 9/32 BSF 7.142 0.977 26 6.518 5.893 0.625 6.10 5/16 BSF 7.938 1.156 22 7.199 6.459 0.739 6.80 3/8 BSF 9.525 1.27 20 8.712 7.899 0.813 8.30 7/16 BSF 11.113 1.411 18 10.209 9.304 0.904 9.70 1/2 BSF 12.700 1.588 16 11.684 10.668 1.017 11.10 9/16 BSF 14.288 1.588 16 13.272 12.256 1.017 12.70 5/8 BSF 15.875 1.814 14 14.712 13.549 1.162 14.00 11/16 BSF 17.463 1.814 14 16.300 15.137 1.162 15.50 3/4 BSF 19.050 2.117 12 17.693 16.336 1.355 16.75 13/16 BSF 20.638 2.117 12 19.281 17.924 1.355 18.25 7/8 BSF 22.225 2.309 11 20.747 19.269 1.479 19.75 1 BSF 25.400 2.54 10 23.774 22.148 1.627 22.75 1 1/8 BSF 28.575 2.822 9 26.769 24.963 1.807 26.501 1/4 BSF 31.750 2.822 9 29.944 28.138 1.807 28.75 1 3/8 BSF 34.925 3.175 8 32.893 30.861 2.033 31.50 1 1/2 BSF 38.100 3.175 8 36.068 34.036 2.033 34.50 1 5/8 BSF 41.275 3.175 8 39.243 37.211 2.033 38.001 3/4 BSF 44.450 3.629 7 42.126 39.802 2.324 40.502 BSF 50.800 3.629 7 48.476 46.152 2.324 47.00 2 1/4 BSF 57.150 4.234 6 54.440 51.730 2.711 53.00 2 1/2 BSF 63.500 4.234 6 60.790 58.080 2.711 59.002 3/4 BSF 69.850 4.234 6 67.140 64.430 2.711 -3 BSF 76.200 5.08 5 72.946 69.692 3.253 - 3 1/4 BSF 82.550 5.085 79.296 76.042 3.253 - 3 1/2 BSF 88.900 5.645 4 1/2 85.285 81.670 3.614 -3 3/4 BSF 95.250 5.645 4 1/2 91.635 88.020 3.614 -4 BSF 101.600 5.645 4 1/2 97.985 94.370 3.614 - 4 1/4 BSF 107.950 6.35 4 103.886 99.822 4.066 -。
度管螺纹标准尺寸对照表[1]
![度管螺纹标准尺寸对照表[1]](https://img.taocdn.com/s3/m/6d5464127c1cfad6185fa7a4.png)
55度管螺纹标准尺寸对照表[1](总7页)--本页仅作为文档封面，使用时请直接删除即可----内页可以根据需求调整合适字体及大小--55°圆锥管螺纹(BSPT)螺纹代号基本尺寸英寸大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高度H1圆弧尺寸r底孔尺寸mmR 1/161/16"28R 1/81/8"28R 1/41/4"19R 3/83/8"19R 1/21/2"14R 3/43/4"14R 11"1130 R 1 1/4 1 1/4"11R 1 1/2 1 1/2"11R 22"1156 R 2 1/2 2 1/2"1171 R 33"11R 44"11R 55"11136 R 66"1155°圆柱管螺纹的型式和尺寸55度圆锥管螺纹的实际加工尺寸55°圆柱管螺纹的型式和尺寸British Pipe Thread (惠氏管螺纹) -- 圆柱 (BSPP/BSPF)螺纹代号基本尺寸大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高度H1底孔尺寸mmG 1/8 1/8"28G 1/4 1/4"19G 3/8 3/8"1915 G 1/2 1/2"1419 G 5/8 5/8"14G 3/4 3/4"14G 7/8 7/8"1428 G 1 1"11G 1 1/8 1 1/8"1135 G 1 1/4 1 1/4"11G 1 3/8 1 3/8" 11G 1 1/2 1 1/2"1145G 1 3/4 1 3/4"1151 G 2 2"1157 G 2 1/4 2 1/4"1163 G 2 1/2 2 1/2"11G 2 3/4 2 3/4"1179 G 3 3"1185.G 3 1/4 3 1/4"1191 G 3 1/2 3 1/2"11G 3 3/4 3 3/4"11104 G 4 4"11G 4 1/2 4 1/2"11123 G 55"11136 G 5 1/2 5 1/2"11G 6 6"11。
管螺纹尺寸对照表
55°圆锥管螺纹型式和尺寸螺纹代号基本尺寸英寸大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高度H1圆弧尺寸r底孔尺寸mmR 1/16 1/16＂7.723 0.907 28 7.142 6.561 0.581 0.125 6.4 R 1/8 1/8＂9.728 0.907 28 9.147 8.566 0.581 0.125 8.4 R 1/4 1/4＂13.157 1.337 19 12.301 11.445 0.856 0.184 11.2 R 3/8 3/8＂16.662 1.337 19 15.806 14.950 0.856 0.184 14.75 R 1/2 1/2＂20.955 1.814 14 19.793 18.631 1.162 0.249 18.25 R 3/4 3/4＂26.441 1.814 14 25.279 24.117 1.162 0.249 23.75 R 1 1＂33.249 2.309 11 31.77 30.291 1.479 0.317 30 R 1 1/4 1 1/4＂41.910 2.309 11 40.431 38.952 1.479 0.317 38.5 R 1 1/2 1 1/2＂47.803 2.309 11 46.324 44.845 1.479 0.317 44.5 R 2 2＂59.614 2.309 11 58.135 56.656 1.479 0.317 56 R 2 1/2 2 1/2＂75.184 2.309 11 73.705 72.226 1.479 0.317 71 R 3 3＂87.884 2.309 11 86.405 84.926 1.479 0.317 85.5 R 4 4＂113.030 2.309 11 111.551 110.072 1.479 0.317 110.5 R 5 5＂138.430 2.309 11 136.951 135.472 1.479 0.317 136 R 6 6＂163.830 2.309 11 162.351 160.872 1.479 0.317 161.555°圆柱管螺纹的型式和尺寸British Pipe Thread (惠氏管螺纹) -- 圆柱(BSPP/BSPF)螺纹代号基本尺寸大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高度H1底孔尺寸mmG 1/8 1/8＂9.728 0.907 28 9.147 8.566 0.581 8.7 G 1/4 1/4＂13.157 1.337 19 12.301 11.445 0.856 11.6 G 3/8 3/8＂16.662 1.337 19 15.806 14.95 0.856 15 G 1/2 1/2＂20.955 1.814 14 19.793 18.631 1.162 19 G 5/8 5/8＂22.911 1.814 14 21.749 20.587 1.162 20.75 G 3/4 3/4＂26.441 1.814 14 25.279 24.117 1.162 24.5 G 7/8 7/8＂30.201 1.814 14 29.039 27.877 1.162 28 G 1 1＂33.249 2.309 11 31.77 30.291 1.479 30.5 G 1 1/8 1 1/8＂37.897 2.309 11 36.418 34.939 1.479 35 G 1 1/4 1 1/4＂41.91 2.309 11 40.431 38.952 1.479 39.5 G 1 3/8 1 3/8＂44.323 2.309 11 42.844 41.365 1.479 41.5 G 1 1/2 1 1/2＂47.803 2.309 11 46.324 44.845 1.479 45 G 1 3/4 1 3/4＂53.746 2.309 11 52.267 50.788 1.479 51G 2 2＂59.614 2.309 11 58.135 56.656 1.479 57 G 2 1/4 2 1/4＂65.71 2.309 11 64.231 62.752 1.479 63 G 2 1/2 2 1/2＂75.184 2.309 11 73.705 72.226 1.479 72.5 G 2 3/4 2 3/4＂81.534 2.309 11 80.055 78.576 1.479 79 G 3 3＂87.884 2.309 11 86.405 84.926 1.479 85.5 G 3 1/4 3 1/4＂93.98 2.309 11 92.501 91.022 1.479 91 G 3 1/2 3 1/2＂100.33 2.309 11 98.351 97.372 1.479 97.75 G 3 3/4 3 3/4＂106.68 2.309 11 105.201 103.722 1.479 104 G 4 4＂113.03 2.309 11 111.55 110.072 1.479 110.5 G 4 1/2 4 1/2＂125.73 2.309 11 124.251 122.772 1.479 123 G 5 5＂138.43 2.309 11 136.951 135.472 1.479 136 G 5 1/2 5 1/2＂151.13 2.309 11 149.651 148.172 1.479 148.5 G 6 6＂163.83 2.309 11 162.351 160.872 1.479 161.5英制普通螺纹(惠氏螺纹) -- 粗牙(BSW)名义尺寸Ww 牙型代号大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高H1底孔直径mm1/16＂BSW 1.587 0.423 60 1.315 1.050 0.270 1.15 3/32＂BSW 2.381 0.529 48 2.041 1.703 0.338 1.90 1/8＂BSW 3.175 0.635 40 2.768 2.362 0.406 2.50 5/32＂BSW 3.969 0.793 32 3.459 2.952 0.507 3.20 3/16＂BSW 4.762 1.058 24 4.084 3.407 0.677 3.70 7/32＂BSW 5.556 1.058 24 4.878 4.201 0.677 4.50 1/4＂BSW 6.350 1.270 20 5.537 4.724 0.813 5.10 5/16＂BSW 7.938 1.411 18 7.034 6.131 0.904 6.50 3/8＂BSW 9.525 1.588 16 8.509 7.492 1.017 7.90 7/16＂BSW 11.113 1.814 14 9.951 8.789 1.162 9.20 1/2＂BSW 12.700 2.117 12 11.345 9.990 1.355 10.40 5/8＂BSW 15.876 2.309 11 14.397 12.918 1.479 13.40 3/4＂BSW 19.051 2.540 10 17.424 15.798 1.627 16.25 7/8＂BSW 22.226 2.822 9 20.419 18.611 1.807 19.25 1＂BSW 25.400 3.175 8 23.368 21.335 2.033 22.00 1 1/8＂BSW 28.576 3.629 7 26.253 23.929 2.324 24.50 1 1/4＂BSW 31.751 3.629 7 29.428 27.104 2.324 27.25 1 3/8＂BSW 34.926 4.233 6 32.215 29.505 2.711 30.25 1 1/2＂BSW 38.100 4.233 6 35.391 32.680 2.711 33.50 1 5/8＂BSW 41.277 5.080 5 38.024 34.771 3.253 35.50 1 3/4＂BSW 44.452 5.080 5 41.199 37.946 3.253 38.50 1 7/8＂BSW 47.627 5.645 4 1/2 44.012 40.398 3.614 41.25 2＂BSW 50.802 5.645 4 1/2 47.187 43.573 3.614 44.502 1/4＂BSW 57.152 6.350 4 53.086 49.020 4.066 50.00 2 1/2＂BSW 63.502 6.350 4 59.436 55.370 4.066 56.00 2 3/4＂BSW 69.853 7.257 3 1/2 65.205 60.558 4.647 61.50 3＂BSW 76.203 7.257 3 1/2 71.556 66.909 4.647 68.00 3 1/4＂BSW 82.553 7.816 3 1/4 77.548 72.544 5.005 73.75 3 1/2＂BSW 88.903 7.816 3 1/4 83.899 78.894 5.005 80.00 3 3/4＂BSW 95.254 8.467 3 89.832 84.410 5.422 85.50 4＂BSW 101.604 8.467 3 96.182 90.760 5.422 92.00 4 1/4＂BSW 107.954 8.835 2 7/8 102.297 96.639 5.657 98.00 4 1/2＂BSW 114.304 8.835 2 7/8 108.647 102.990 5.657 104.20 4 3/4＂BSW 120.665 9.237 2 3/4 114.740 108.625 5.915 110.00 5＂BSW 127.005 9.237 2 3/4 121.090 115.176 5.915 116.50 5 1/4＂BSW 133.355 9.677 2 5/8 127.159 120.963 6.196 122.50 5 1/2＂BSW 139.705 9.677 2 5/8 133.509 127.313 6.196 128.50 5 3/4＂BSW 146.055 10.160 2 1/2 139.549 133.043 6.506 134.50 6＂BSW 152.406 10.160 2 1/2 145.900 139.394 6.506 141.00英制普通螺纹(惠氏螺纹) -- 细牙(BSW)名义尺寸BSF 牙型代号大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高H1底孔直径mm3/16 BSF 4.763 0.794 32 4.255 3.747 0.508 4.00 7/32 BSF 5.556 0.907 28 4.975 4.394 0.581 4.60 1/4 BSF 6.350 0.977 26 5.725 5.100 0.625 5.30 9/32 BSF 7.142 0.977 26 6.518 5.893 0.625 6.10 5/16 BSF 7.938 1.156 22 7.199 6.459 0.739 6.80 3/8 BSF 9.525 1.27 20 8.712 7.899 0.813 8.30 7/16 BSF 11.113 1.411 18 10.209 9.304 0.904 9.70 1/2 BSF 12.700 1.588 16 11.684 10.668 1.017 11.10 9/16 BSF 14.288 1.588 16 13.272 12.256 1.017 12.70 5/8 BSF 15.875 1.814 14 14.712 13.549 1.162 14.00 11/16 BSF 17.463 1.814 14 16.300 15.137 1.162 15.50 3/4 BSF 19.050 2.117 12 17.693 16.336 1.355 16.75 13/16 BSF 20.638 2.117 12 19.281 17.924 1.355 18.25 7/8 BSF 22.225 2.309 11 20.747 19.269 1.479 19.75 1 BSF 25.400 2.54 10 23.774 22.148 1.627 22.75 1 1/8 BSF 28.575 2.822 9 26.769 24.963 1.807 26.501 1/4 BSF 31.750 2.822 9 29.944 28.138 1.807 28.75 1 3/8 BSF 34.925 3.175 8 32.893 30.861 2.033 31.50 1 1/2 BSF 38.100 3.175 8 36.068 34.036 2.033 34.50 1 5/8 BSF 41.275 3.175 8 39.243 37.211 2.033 38.001 3/4 BSF 44.450 3.629 7 42.126 39.802 2.324 40.502 BSF 50.800 3.629 7 48.476 46.152 2.324 47.00 2 1/4 BSF 57.150 4.234 6 54.440 51.730 2.711 53.00 2 1/2 BSF 63.500 4.234 6 60.790 58.080 2.711 59.002 3/4 BSF 69.850 4.234 6 67.140 64.430 2.711 -3 BSF 76.200 5.08 5 72.946 69.692 3.253 - 3 1/4 BSF 82.550 5.085 79.296 76.042 3.253 - 3 1/2 BSF 88.900 5.645 4 1/2 85.285 81.670 3.614 -3 3/4 BSF 95.250 5.645 4 1/2 91.635 88.020 3.614 -4 BSF 101.600 5.645 4 1/2 97.985 94.370 3.614 - 4 1/4 BSF 107.950 6.35 4 103.886 99.822 4.066 -。
60度圆锥管螺纹(布锥管螺纹)
标记示例:
公称直径3/4”,左旋: Z3/4”左(右旋不标”右”字)
公称直径
(英寸)
每英寸牙数
n
螺距
p
螺纹长度
基面上的螺纹直径
管端螺纹内径
dr
牙形高度h1有效长度L1管端至基面长度L2
外径
d
中径
d2
内径
d2
1/16
1/8
27
0.941
6.5
7
4.064
4.572
7.895
10.272
7.142
9.519
6.389
8.776
6.135
8.480
0.753
1/4
3/8
18
1.411
9.5
10.5
5.080
6.096
13.572
17.055
12.443
15.926
11.314
14.797
10.997
14.416
1.129
1/2
3/4
14
1.814
13.5
14
8.128
8.611
21.223
26.586
19.772
25.117
18.321
23.666
17.813
23.128
1.451
1
1 1/4
1 1/2
2
11 1/2
2.209
17.5
18
10.106
10.668
10.668
11.074
33.228
41.985
48.054
60.092
31.461