| 螺紋公稱 |
攻牙鑽孔尺寸 |
螺紋公稱 |
攻牙鑽孔尺寸 |
| 公制粗牙螺紋 |
最小 |
最大 |
適用鑽頭 |
美英制粗牙螺紋 |
最小 |
最大 |
適用鑽頭 |
| M3-0.5 |
3.12 |
3.20 |
3.1 |
U#4-40 |
2.95 |
3.07 |
3.0 |
| M4-0.7 |
4.17 |
4.30 |
4.2 |
U#5-40 |
3.25 |
3.38 |
3.3 |
| M5-0.8 |
5.16 |
5.33 |
5.2 |
U#6-32 |
3.66 |
3.81 |
3.7 |
| M6-1.0 |
6.25 |
6.42 |
6.3 |
U#8-32 |
4.32 |
4.47 |
4.4 |
| M7-1.0 |
7.25 |
7.42 |
7.3 |
U#10-24 |
5.05 |
5.21 |
5.1 |
| M8-1.25 |
8.31 |
8.52 |
8.4 |
U1/4-20 |
6.63 |
6.78 |
6.7 |
| M10-1.5 |
10.37 |
10.62 |
10.5 |
U5/16-18 |
8.33 |
8.48 |
8.4 |
| M12-1.75 |
12.43 |
12.73 |
12.5 |
U3/8-16 |
9.91 |
10.11 |
10.0 |
| M14-2.0 |
14.49 |
14.83 |
14.5 |
U7/16-14 |
11.51 |
11.76 |
11.6 |
| M16-2.0 |
16.49 |
16.83 |
16.5 |
U1/2-13 |
13.08 |
13.34 |
13.2 |
| M18-2.5 |
18.58 |
19.04 |
19.0 |
U9/16-12 |
14.68 |
14.94 |
14.8 |
| M20-2.5 |
20.58 |
21.04 |
21.0 |
U5/8-11 |
16.59 |
16.84 |
16.7 |
|
|
|
|
U3/4-10 |
19.84 |
20.09 |
20.0 |
| 公制細牙螺紋 |
最小 |
最大 |
適用鑽頭 |
美英制細牙螺紋 |
最小 |
最大 |
適用鑽頭 |
| M8-1.0 |
8.25 |
8.42 |
8.3 |
U#8-36 |
4.32 |
4.44 |
4.4 |
| M10-1.0 |
10.25 |
10.42 |
10.3 |
U#10-32 |
4.98 |
5.13 |
5.0 |
| M10-1.25 |
10.31 |
10.52 |
10.4 |
U1/4-28 |
6.53 |
6.71 |
6.6 |
| M12-1.25 |
12.31 |
12.52 |
12.4 |
U5/16-24 |
8.20 |
8.38 |
8.3 |
| M12-1.5 |
12.37 |
12.62 |
12.5 |
U3/8-24 |
9.78 |
9.96 |
9.8 |
| M14-1.25 |
14.27 |
14.4 |
14.3 |
U7/16-20 |
11.43 |
11.63 |
11.5 |
| M14-1.5 |
14.37 |
14.62 |
14.5 |
U1/2-20 |
13.03 |
13.26 |
13.1 |
| M16-1.5 |
16.37 |
16.62 |
16.5 |
U5/8-18 |
16.26 |
16.48 |
16.3 |
| M18-1.5 |
18.37 |
18.62 |
18.5 |
U3/4-16 |
19.43 |
19.68 |
19.5 |
| M20-1.5 |
20.37 |
20.62 |
20.5 |
|
|
|
|