公制螺纹底孔用钻头直径尺寸表
公制螺栓、螺纹钻孔尺寸表
螺纹d
M2 M2.5 M3 M3.5 M4 M4.5 M5 M6 M7 M8 M10 M12 M14 M16 M18 M20 M22 M24
通孔直径dh
精装H12 中装H13 粗装H14
2.2
2.4
2.6
2.7
2.9
3.1
3.2
3.4
3.6
3.7
3.9
4.2
4.3
4.5
4.8
4.8
5
5.3
5.3
5.5
5.8
6.
9
10
10.5
11
12
13
13.5
14.5
15
15.5
16.5
17
17.5
18.5
19
20
21
21
22
24
23
24
26
25
26
28
螺纹d
M27 M30 M33 M36 M39 M42 M45 M48 M52 M56 M60
通孔直径dh
精装H12 中装H13 粗装H14
1 0.75 1.25
1 0.75 1.5
1 1.25 0.75 1.75 1.5 1.25
1 2 1.5 1 2 1.5 1 2.5 1.5 1 2.5 2 1.5 1
钻头 直径
1.6 1.7 2.5 2.6 3.3 3.5 4.2 4.5 5 5.3 6.8 7 7.3 8.5 9 8.8 9.3 10.2 10.5 10.8 11 12 12.5 13 14 14.5 15 15.5 16.5 17 17.5 18 18.5 19
4
44
公制螺纹钻底孔用钻头直径和螺栓通孔直径尺寸表
3.5
1 粗 2.5
粗 0.8
4.2
细 0.5
4.5
2
20 细 1.5
粗
1
5
1
细 0.75
5.2
粗 2.5
粗 1.25
6.7
1
7
细
0.75
7.2
2 22
细 1.5
1
粗 1.5
8.5
粗
3
1.25
8.7
细
1
9
2
24 细 1.5
0.75
9.2
粗 1.75
10.2
1
27
粗
3
钻头直径 dz
13.9* 14.5 15 15.4 15.9 16.5 17 17.4 17.9 18.5 19 19.4* 19.9 20.5 21 20.9 21.9 22.5 23 23.9*
公称直径 d 1 2 3 4 5 6 8
10 12
公制螺纹钻底孔用钻头直径尺寸表
螺距 t 粗 0.25
钻头直径 dz 0.75
公称直径 d
螺距 t
粗
2
细 0.2
0.8
粗 0.4
1.6
16
1.5
细
1
细 0.25
1.75
粗 2.5
粗 0.5
2.5
细 0.35
2.65
2
18 细 1.5
粗 0.7
3.3
细 0.5
22
19.4
19.3 19.5
39
34.8
— 35
27
23.9
—
24
45
40.3
— 40.5
公制螺纹钻底孔用钻头直径尺寸表之欧阳音创编
公制螺纹钻底孔用钻头直径尺寸表M1:粗扣螺距0.25＝Φ0.75 细扣螺距0.2＝Φ0.8M2:粗扣螺距0.4＝Φ1.6 细扣螺距0.25＝Φ1.8M3:粗扣螺距0.5＝Φ2.5 细扣螺距0.35＝Φ2.7M4:粗扣螺距0.7＝Φ3.3 细扣螺距0.5＝Φ3.5M5:粗扣螺距0.8＝Φ4.2 细扣螺距0.5＝Φ4.5M6:粗扣螺距 1.0＝Φ5.0 细扣螺距0.75＝Φ5.2M8:粗扣螺距 1.25＝Φ6.7 细扣螺距1.0 ,0.75＝Φ7,Φ7.2M10:粗扣螺距 1.5＝Φ8.5 细扣螺距1.25,1.0 ,0.75＝Φ8.7,Φ9,Φ9.2M12:粗扣螺距 1.75＝Φ10.2 细扣螺距1.5,1.25,1.0＝Φ10.5,Φ10.7,Φ11M14:粗扣螺距 2.0＝Φ11.9 细扣螺距1.5,1.25,1.0＝Φ12.5,Φ12.7,Φ13M16:粗扣螺距 2.0＝Φ14 细扣螺距1.5,1.0＝Φ14.5,Φ15M18:粗扣螺距 2.5＝Φ15.4 细扣螺距2.0 ,1.5,1.0＝Φ15.9,Φ16.5,Φ17M20:粗扣螺距 2.5＝Φ17.4 细扣螺距2.0 ,1.5,1.0＝Φ17.9,Φ18.5,Φ19M22:粗扣螺距 2.5＝Φ19.5 细扣螺距2.0 ,1.5,1.0＝Φ19.9,Φ20.5,Φ21M24:粗扣螺距 3.0＝Φ20.9 细扣螺距2.0 ,1.5,1.0＝Φ21.9,Φ22.5,Φ23生产中钻螺纹底孔公式：t＜1mm: Dz=d-tt＞1mm: Dz=d-(1.04~1.06)t式中 t 螺距（毫米）Dz 攻丝前钻头直径（毫米）d 螺纹公称直径（毫米）公制螺纹钻底孔用钻头直径尺寸表公称直径 d 螺距t 钻头直径公称直径 d 螺距t 公称直径dM1 粗 0.25 =0.75 M2 粗 0.4 =1.6细 0.2 =0.8 细 0.25 =1.75M3 粗 0.5 =2.5 M4 粗 0.7= 3.3细 0.35 =2.65 细 0.5 =3.5M5 粗 0.8 =4.2 M6 粗 1.0 =5.0细 0.5 =4.5 细 0.75 =5.2M8 粗 1.25 =6.7 M10 粗 1.5 =8.5细 1.0=7.0 细 1.25 =8.7细 0.75 =7.2 细 1.0=9.0细 0.75 =9.2M12 粗 1.75 =10.2 M14 粗 2.0=11.9细 1.5 =10.5 细 1.5 =12.5细 1.25 =10.7 细 1.25 =12.7细 1.0=11.0 细 1.0=13.0M16 粗 2.0=13.9 M18 粗 2.5 =15.4细 1.5 =14.5 细 2.0=15.9细 1.0=15.0细 1.5 =16.5细 1.0=17.0M20 粗 2.5 =17.4 M22 粗 2.5 =19.4细 2.0=17.9 细 2.0=19.9细 1.5 =18.5 细 1.5 =20.5 细 1.0=19.0 细 1.0=21.0M24 粗 3.0=20.9 M27 粗 3.0=23.9细 2.0=21.9 细 2.0=24.9细 1.5 =22.5 细 1.5 =25.5细 1.0=23.0 细 1.0=26.0M30 粗 3.5 =26.3 M33 粗 3.5 =29.3 细 3.0=26.9 细 3.0 =29.9细 2.0=27.9 细 2.0=30.9细 1.5 =28.5 细 1.5 =31.5细 1.0=29.0M36 粗 4.0=31.8 M39 粗 4.0=34.8 细 3.0=32.9 细 3.0=35.9细 2.0=33.9 细 2.0 =36.9细 1.5 =34.5 细 1.5 =37.5M42 粗 4.5 =37.3 M45 粗 4.5 =40.3 细 4.0=37.8 细 4.0=40.8细 3.0=38.9 细 3.0=41.9 细 2.0=39.9 细 2.0=42.9细 1.5 =40.5 细 1.5 =43.5M48 粗 5.0=42.7 M52 粗 5.0=46.7细 4.0=43.8 细 4.0=47.8细 3.0=44.9 细 3.0=48.9 细 2.0=45.9 细 2.0=49.9 细 1.5 =46.5 细 1.5 =50.5。
公制螺纹钻底孔用钻头直径尺寸表
公制螺纹钻底孔用钻头直径尺寸表Company Document number：WTUT-WT88Y-W8BBGB-BWYTT-19998公制螺纹钻底孔用钻头直径尺寸表M1:粗扣螺距＝Φ细扣螺距＝ΦM2:粗扣螺距＝Φ细扣螺距＝ΦM3:粗扣螺距＝Φ细扣螺距＝ΦM4:粗扣螺距＝Φ细扣螺距＝ΦM5:粗扣螺距＝Φ细扣螺距＝ΦM6:粗扣螺距＝Φ细扣螺距＝ΦM8:粗扣螺距＝Φ细扣螺距 , ＝Φ7,ΦM10:粗扣螺距＝Φ细扣螺距 , , ＝Φ,Φ9,ΦM12:粗扣螺距＝Φ细扣螺距 , , ＝Φ,Φ,Φ11M14:粗扣螺距＝Φ细扣螺距 , , ＝Φ,Φ,Φ13M16:粗扣螺距＝Φ14 细扣螺距 , ＝Φ,Φ15M18:粗扣螺距＝Φ细扣螺距 , ,＝Φ,Φ,Φ17M20:粗扣螺距＝Φ细扣螺距 , , ＝Φ,Φ,Φ19M22:粗扣螺距＝Φ细扣螺距 , , ＝Φ,Φ,Φ21M24:粗扣螺距＝Φ细扣螺距 , , ＝Φ,Φ,Φ23生产中钻螺纹底孔公式：t＜1mm: Dz=d-tt＞1mm: Dz=d-~t式中 t 螺距（毫米）Dz 攻丝前钻头直径（毫米）d 螺纹公称直径（毫米）公制螺纹钻底孔用钻头直径尺寸表公称直径d 螺距t 钻头直径公称直径d 螺距t 公称直径d M1 粗 = M2 粗 =细 = 细 =M3 粗 = M4 粗 =细 = 细 =M5 粗 = M6 粗 =细 = 细 =M8 粗 = M10 粗 =细 = 细 =细 = 细 =细 =M12 粗 = M14 粗 =细 = 细 =细 = 细 =细 = 细 =M16 粗 = M18 粗 =细 = 细 =细 = 细 =细 =M20 粗 = M22 粗 =细 = 细 =细 = 细 =细 = 细 = M24 粗 = M27 粗 = 细 = 细 =细 = 细 =细 = 细 = M30 粗 = M33 粗 = 细 = 细 =细 = 细 =细 = 细 =细 =M36 粗 = M39 粗 = 细 = 细 =细 = 细 =细 = 细 = M42 粗 = M45 粗 = 细 = 细 =细 = 细 =细 = 细 =细 = 细 = M48 粗 = M52 粗 = 细 = 细 =细 = 细 =细 = 细 =细 = 细 =。
钻螺纹底孔所用钻头直径尺寸对照表
公称直径 每寸牙数 外径尺寸
（＂）
3/16
1/4
5/16 3/8 1/2 5/8 3/4 7/8
1 1 1/8 1 1/4 1 1/2 1 3/4
2 2 1/4 2 1/2 2 3/4
3 3 1/4 3 1/2 3 3/4
4
n
24
20
18 16 12 11 10 9 8 7 7 6 5 4 1/2 4 4 3 1/2 3 1/2 3 1/4 3 1/4 3
36 细牙
3 2
1.5 10.5 12 细牙 1.25 10.7
1.5 粗牙 4
1 粗牙 2
11 11.9
39 细牙
3 2
14
1.5 12.5 细牙 1.25 12.7
1.5 粗牙 4.5
1
13
4
16
粗牙 2
细牙
1.5 1
13.9 14.5
15
42 细牙
3 2
1.5
粗牙 2.5 15.4
粗牙 4.5
3
d
4.762
6.35
7.938 9.525 12.7 15.875 19.05 22.225 25.4 28.575 31.75 38.1 44.45 50.8 57.15 63.5 69.85 76.2 82.55 88.9 95.25
101.6
圆柱管螺纹外径
公称直径
（＂）
1/8
1/4
3/8 1/2 5/8 3/4 7/8
公制螺纹钻底孔用钻头直径尺寸表
公称直 径 d
螺距 t
钻头直 公称 径Φ 直径d
螺距 t
1 2
粗牙
细牙
粗牙 细牙
钻螺纹底孔所用钻头直径尺寸对照表资料
20.5 21
52
粗牙 细牙
5 46.7 从略
摘自《机械零件手册》
1:3 18°55’29 9°27’44” 160 160 7:24 16°35’32 8°17’46” 200 200
圆柱管螺纹外径尺寸表
每寸牙数 外径尺寸
n
d
28
9.729
19
13.158
19
16.663
14
20.956
14
22.912
14
26.442
14
30.202
11
33.25
11
37.898
11
41.912
11
44.325
11
47.805
11
53.748
11
59.616
11
65.712
11
75.187
11
81.537
11
83.887
11
100.334
11
113.034
11
138.435
11
163.836
常用工具锥度表
锥度 v
直径 牙数
（＂） n
3/16 24
1/4 20 5/16 18 3/8 16
7/16 14 1/2 12
9/16 12 5/8 11
3/4 10 7/8 9
1
8
1 1/8 7
1 1/4 7 1 1/2 6 1 3/8 5
1 3/4 5 1 7/8 4 1/2
2 4 1/2
钻头直径Φ
铸铁
钢
青铜
黄铜
3.7
细牙
2 1.5
1
5
粗牙 0.8 细牙 0.5
公制螺纹钻底孔用钻头直径尺寸表之欧阳家百创编
公制螺纹钻底孔用钻头直径尺寸表欧阳家百（2021.03.07）M1:粗扣螺距0.25＝Φ0.75 细扣螺距0.2＝Φ0.8M2:粗扣螺距0.4＝Φ1.6 细扣螺距0.25＝Φ1.8M3:粗扣螺距0.5＝Φ2.5 细扣螺距0.35＝Φ2.7M4:粗扣螺距0.7＝Φ3.3 细扣螺距0.5＝Φ3.5M5:粗扣螺距0.8＝Φ4.2 细扣螺距0.5＝Φ4.5M6:粗扣螺距1.0＝Φ5.0 细扣螺距0.75＝Φ5.2M8:粗扣螺距1.25＝Φ6.7 细扣螺距1.0 ,0.75＝Φ7,Φ7.2M10:粗扣螺距1.5＝Φ8.5 细扣螺距1.25,1.0 ,0.75＝Φ8.7,Φ9,Φ9.2M12:粗扣螺距1.75＝Φ10.2 细扣螺距1.5,1.25,1.0＝Φ10.5,Φ10.7,Φ11M14:粗扣螺距2.0＝Φ11.9 细扣螺距1.5,1.25,1.0＝Φ12.5,Φ12.7,Φ13M16:粗扣螺距2.0＝Φ14 细扣螺距1.5,1.0＝Φ14.5,Φ15M18:粗扣螺距2.5＝Φ15.4 细扣螺距2.0 ,1.5,1.0＝Φ15.9,Φ16.5,Φ17M20:粗扣螺距2.5＝Φ17.4 细扣螺距2.0 ,1.5,1.0＝Φ17.9,Φ18.5,Φ19M22:粗扣螺距2.5＝Φ19.5 细扣螺距2.0 ,1.5,1.0＝Φ19.9,Φ20.5,Φ21M24:粗扣螺距3.0＝Φ20.9 细扣螺距2.0 ,1.5,1.0＝Φ21.9,Φ22.5,Φ23生产中钻螺纹底孔公式：t＜1mm: Dz=d-tt＞1mm: Dz=d-(1.04~1.06)t式中 t 螺距（毫米）Dz 攻丝前钻头直径（毫米）d 螺纹公称直径（毫米）公制螺纹钻底孔用钻头直径尺寸表公称直径d 螺距t 钻头直径公称直径d 螺距t 公称直径dM1 粗 0.25 =0.75 M2 粗 0.4 =1.6细 0.2 =0.8 细 0.25 =1.75M3 粗 0.5 =2.5 M4 粗 0.7= 3.3细 0.35 =2.65 细 0.5 =3.5M5 粗 0.8 =4.2 M6 粗 1.0 =5.0细 0.5 =4.5 细 0.75 =5.2M8 粗 1.25 =6.7 M10 粗 1.5 =8.5细 1.0=7.0 细 1.25 =8.7细 0.75 =7.2 细 1.0=9.0细 0.75 =9.2M12 粗 1.75 =10.2 M14 粗 2.0=11.9细 1.5 =10.5 细 1.5 =12.5细 1.25 =10.7 细 1.25 =12.7细 1.0=11.0 细 1.0=13.0M16 粗 2.0=13.9 M18 粗 2.5 =15.4 细 1.5 =14.5 细 2.0=15.9细 1.0=15.0细 1.5 =16.5细 1.0=17.0M20 粗 2.5 =17.4 M22 粗 2.5 =19.4 细 2.0=17.9 细 2.0=19.9细 1.5 =18.5 细 1.5 =20.5细 1.0=19.0 细 1.0=21.0M24 粗 3.0=20.9 M27 粗 3.0=23.9 细 2.0=21.9 细 2.0=24.9细 1.5 =22.5 细 1.5 =25.5细 1.0=23.0 细 1.0=26.0M30 粗 3.5 =26.3 M33 粗 3.5 =29.3 细 3.0=26.9 细 3.0 =29.9细 2.0=27.9 细 2.0=30.9细 1.5 =28.5 细 1.5 =31.5细 1.0=29.0M36 粗 4.0=31.8 M39 粗 4.0=34.8 细 3.0=32.9 细 3.0=35.9细 2.0=33.9 细 2.0 =36.9细 1.5 =34.5 细 1.5 =37.5M42 粗 4.5 =37.3 M45 粗 4.5 =40.3 细 4.0=37.8 细 4.0=40.8细 3.0=38.9 细 3.0=41.9细 2.0=39.9 细 2.0=42.9细 1.5 =40.5 细 1.5 =43.5M48 粗 5.0=42.7 M52 粗 5.0=46.7 细 4.0=43.8 细 4.0=47.8细 3.0=44.9 细 3.0=48.9细 2.0=45.9 细 2.0=49.9细 1.5 =46.5 细 1.5 =50.5。
公制螺纹钻底孔用钻头直径尺寸表之欧阳引擎创编
公制螺纹钻底孔用钻头直径尺寸表欧阳引擎（2021.01.01）M1:粗扣螺距0.25＝Φ0.75 细扣螺距0.2＝Φ0.8M2:粗扣螺距0.4＝Φ1.6 细扣螺距0.25＝Φ1.8M3:粗扣螺距0.5＝Φ2.5 细扣螺距0.35＝Φ2.7M4:粗扣螺距0.7＝Φ3.3 细扣螺距0.5＝Φ3.5M5:粗扣螺距0.8＝Φ4.2 细扣螺距0.5＝Φ4.5M6:粗扣螺距1.0＝Φ5.0 细扣螺距0.75＝Φ5.2M8:粗扣螺距1.25＝Φ6.7 细扣螺距1.0 ,0.75＝Φ7,Φ7.2M10:粗扣螺距1.5＝Φ8.5 细扣螺距1.25,1.0 ,0.75＝Φ8.7,Φ9,Φ9.2M12:粗扣螺距1.75＝Φ10.2 细扣螺距1.5,1.25,1.0＝Φ10.5,Φ10.7,Φ11M14:粗扣螺距2.0＝Φ11.9 细扣螺距1.5,1.25,1.0＝Φ12.5,Φ12.7,Φ13M16:粗扣螺距2.0＝Φ14 细扣螺距1.5,1.0＝Φ14.5,Φ15M18:粗扣螺距2.5＝Φ15.4 细扣螺距2.0 ,1.5,1.0＝Φ15.9,Φ16.5,Φ17M20:粗扣螺距2.5＝Φ17.4 细扣螺距2.0 ,1.5,1.0＝Φ17.9,Φ18.5,Φ19M22:粗扣螺距2.5＝Φ19.5 细扣螺距2.0 ,1.5,1.0＝Φ19.9,Φ20.5,Φ21M24:粗扣螺距3.0＝Φ20.9 细扣螺距2.0 ,1.5,1.0＝Φ21.9,Φ22.5,Φ23生产中钻螺纹底孔公式：t＜1mm: Dz=d-tt＞1mm: Dz=d-(1.04~1.06)t式中 t 螺距（毫米）Dz 攻丝前钻头直径（毫米）d 螺纹公称直径（毫米）公制螺纹钻底孔用钻头直径尺寸表公称直径d 螺距t 钻头直径公称直径d 螺距t 公称直径dM1 粗 0.25 =0.75 M2 粗 0.4 =1.6细 0.2 =0.8 细 0.25 =1.75M3 粗 0.5 =2.5 M4 粗 0.7= 3.3细 0.35 =2.65 细 0.5 =3.5M5 粗 0.8 =4.2 M6 粗 1.0 =5.0细 0.5 =4.5 细 0.75 =5.2M8 粗 1.25 =6.7 M10 粗 1.5 =8.5细 1.0=7.0 细 1.25 =8.7细 0.75 =7.2 细 1.0=9.0细 0.75 =9.2M12 粗 1.75 =10.2 M14 粗 2.0=11.9细 1.5 =10.5 细 1.5 =12.5细 1.25 =10.7 细 1.25 =12.7细 1.0=11.0 细 1.0=13.0M16 粗 2.0=13.9 M18 粗 2.5 =15.4 细 1.5 =14.5 细 2.0=15.9细 1.0=15.0细 1.5 =16.5细 1.0=17.0M20 粗 2.5 =17.4 M22 粗 2.5 =19.4 细 2.0=17.9 细 2.0=19.9细 1.5 =18.5 细 1.5 =20.5细 1.0=19.0 细 1.0=21.0M24 粗 3.0=20.9 M27 粗 3.0=23.9 细 2.0=21.9 细 2.0=24.9细 1.5 =22.5 细 1.5 =25.5细 1.0=23.0 细 1.0=26.0M30 粗 3.5 =26.3 M33 粗 3.5 =29.3 细 3.0=26.9 细 3.0 =29.9细 2.0=27.9 细 2.0=30.9细 1.5 =28.5 细 1.5 =31.5细 1.0=29.0M36 粗 4.0=31.8 M39 粗 4.0=34.8细 3.0=32.9 细 3.0=35.9细 2.0=33.9 细 2.0 =36.9细 1.5 =34.5 细 1.5 =37.5M42 粗 4.5 =37.3 M45 粗 4.5 =40.3 细 4.0=37.8 细 4.0=40.8细 3.0=38.9 细 3.0=41.9细 2.0=39.9 细 2.0=42.9细 1.5 =40.5 细 1.5 =43.5M48 粗 5.0=42.7 M52 粗 5.0=46.7 细 4.0=43.8 细 4.0=47.8细 3.0=44.9 细 3.0=48.9细 2.0=45.9 细 2.0=49.9细 1.5 =46.5 细 1.5 =50.5。
公制螺纹钻底孔用钻头直径尺寸表之欧阳与创编
公制螺纹钻底孔用钻头直径尺寸表M1:粗扣螺距0.25＝Φ0.75 细扣螺距0.2＝Φ0.8M2:粗扣螺距0.4＝Φ1.6 细扣螺距0.25＝Φ1.8M3:粗扣螺距0.5＝Φ2.5 细扣螺距0.35＝Φ2.7M4:粗扣螺距0.7＝Φ3.3 细扣螺距0.5＝Φ3.5M5:粗扣螺距0.8＝Φ4.2 细扣螺距0.5＝Φ4.5M6:粗扣螺距1.0＝Φ5.0 细扣螺距0.75＝Φ5.2 M8:粗扣螺距1.25＝Φ6.7 细扣螺距1.0 ,0.75＝Φ7,Φ7.2M10:粗扣螺距1.5＝Φ8.5 细扣螺距1.25,1.0 ,0.75＝Φ8.7,Φ9,Φ9.2M12:粗扣螺距1.75＝Φ10.2 细扣螺距1.5,1.25,1.0＝Φ10.5,Φ10.7,Φ11M14:粗扣螺距2.0＝Φ11.9 细扣螺距1.5,1.25,1.0＝Φ12.5,Φ12.7,Φ13M16:粗扣螺距2.0＝Φ14 细扣螺距1.5,1.0＝Φ14.5,Φ15M18:粗扣螺距2.5＝Φ15.4 细扣螺距2.0 ,1.5,1.0＝Φ15.9,Φ16.5,Φ17M20:粗扣螺距2.5＝Φ17.4 细扣螺距2.0 ,1.5,1.0＝Φ17.9,Φ18.5,Φ19M22:粗扣螺距2.5＝Φ19.5 细扣螺距2.0 ,1.5,1.0＝Φ19.9,Φ20.5,Φ21M24:粗扣螺距3.0＝Φ20.9 细扣螺距2.0 ,1.5,1.0＝Φ21.9,Φ22.5,Φ23生产中钻螺纹底孔公式：t＜1mm: Dz=d-tt＞1mm: Dz=d-(1.04~1.06)t式中 t 螺距（毫米）Dz 攻丝前钻头直径（毫米）d 螺纹公称直径（毫米）公制螺纹钻底孔用钻头直径尺寸表公称直径d 螺距t 钻头直径公称直径d 螺距t 公称直径dM1 粗 0.25 =0.75 M2 粗 0.4 =1.6细 0.2 =0.8 细 0.25 =1.75M3 粗 0.5 =2.5 M4 粗 0.7= 3.3细 0.35 =2.65 细 0.5 =3.5M5 粗 0.8 =4.2 M6 粗 1.0 =5.0细 0.5 =4.5 细 0.75 =5.2M8 粗 1.25 =6.7 M10 粗 1.5 =8.5 细 1.0=7.0 细 1.25 =8.7细 0.75 =7.2 细 1.0=9.0细 0.75 =9.2M12 粗 1.75 =10.2 M14 粗 2.0=11.9 细 1.5 =10.5 细 1.5 =12.5细 1.25 =10.7 细 1.25 =12.7细 1.0=11.0 细 1.0=13.0M16 粗 2.0=13.9 M18 粗 2.5 =15.4 细 1.5 =14.5 细 2.0=15.9细 1.0=15.0细 1.5 =16.5细 1.0=17.0M20 粗 2.5 =17.4 M22 粗 2.5 =19.4 细 2.0=17.9 细 2.0=19.9细 1.5 =18.5 细 1.5 =20.5细 1.0=19.0 细 1.0=21.0M24 粗 3.0=20.9 M27 粗 3.0=23.9 细 2.0=21.9 细 2.0=24.9细 1.5 =22.5 细 1.5 =25.5细 1.0=23.0 细 1.0=26.0M30 粗 3.5 =26.3 M33 粗 3.5 =29.3 细 3.0=26.9 细 3.0 =29.9细 2.0=27.9 细 2.0=30.9细 1.5 =28.5 细 1.5 =31.5细 1.0=29.0M36 粗 4.0=31.8 M39 粗 4.0=34.8 细 3.0=32.9 细 3.0=35.9细 2.0=33.9 细 2.0 =36.9细 1.5 =34.5 细 1.5 =37.5M42 粗 4.5 =37.3 M45 粗 4.5 =40.3 细 4.0=37.8 细 4.0=40.8细 3.0=38.9 细 3.0=41.9细 2.0=39.9 细 2.0=42.9细 1.5 =40.5 细 1.5 =43.5M48 粗 5.0=42.7 M52 粗 5.0=46.7细 4.0=43.8 细 4.0=47.8细 3.0=44.9 细 3.0=48.9细 2.0=45.9 细 2.0=49.9细 1.5 =46.5 细 1.5 =50.5。
公制螺栓、螺纹钻孔尺寸表
1 0.75 1.5
1 1.25 0.75 1.75 1.5 1.25
1 2 1.5 1 2 1.5 1 2.5 1.5 1 2.5 2 1.5 1
钻头 直径
1.6 1.7 2.5 2.6 3.3 3.5 4.2 4.5 5 5.3 6.8 7 7.3 8.5 9 8.8 9.3 10.2 10.5 10.8 11 12 12.5 13 14 14.5 15 15.5 16.5 17 17.5 18 18.5 19
5
5.3
5.3
5.5
5.8
6.4
6.6
7
7.4
7.6
8
8.4
9
10
10.5
11
12
13
13.5
14.5
15
15.5
16.5
17
17.5
18.5
19
20
21
21
22
24
23
24
26
25
26
28
螺纹d
M27 M30 M33 M36 M39 M42 M45 M48 M52 M56 M60
通孔直径dh
精装H12 中装H13 粗装H14
公制螺栓孔 底孔尺寸表
螺纹d
M2 M2.5 M3 M3.5 M4 M4.5 M5 M6 M7 M8 M10 M12 M14 M16 M18 M20 M22 M24
通孔直径dh
精装H12 中装H13 粗装H14
2.2
2.4
2.6
2.7
2.9
3.1
3.2
3.4
3.6
3.7
3.9
4.2
攻丝前钻底孔用钻头直径尺寸
一、公制螺纹钻底孔用钻头直径尺寸表
螺纹公称直径d
螺距
t
钻头直径
d
螺纹公称直径d
螺距t
钻头直径d
M4
粗
0.7
3.3
M16
粗
2
13.9
细
0.5
3.5
细
1.5
14.5
M5
粗
0.8
4.2
1
15
细
0.5
4.5
M18
粗
2.5
15.4
M6
粗
1
5
细
2
15.9
细
0.75
5.2
1.5
16.5
M8
14
24.3
1 1/2
11
45.1
7/8
14
28.1
1 3/4
11
51
1
11
30.5
2
11
57
链接零件沉头座及通孔尺寸
螺钉或螺栓直径
d
M4
M5
M6
M8
M10
M12
M14
M16
M18
M20
钻孔直径
精装配
4.3
5.3
6.4
8.4
10.5
12.5
14.5
16.5
18.5
20.6
中等装配
4.5
5.5
6.6
9
15
17
19
21
允差
+0.03
+0.36
+0.43
+0.52
锥销孔和铰刀钻孔直径表