螺紋尺寸 Threads Size | 等級tolerance class | |||||||||||
1級 class 1 | 2級 class 2 | 3級 class 3 | ||||||||||
M | 2 | × | 0.4 | 1.73 | - | 1.71 | 1.70 | - | 1.67 | 1.68 | - | 1.64 |
2.3 | × | 0.4 | 2.03 | - | 2.01 | 2.00 | - | 1.97 | 1.98 | - | 1.94 | |
2.6 | × | 0.45 | 2.29 | - | 2.27 | 2.26 | - | 2.23 | 2.25 | - | 2.21 | |
3 | × | 0.5 | 2.66 | - | 2.64 | 2.63 | - | 2.60 | - | |||
3.5 | × | 0.6 | 3.10 | - | 3.08 | 3.06 | - | 3.03 | 3.05 | - | 3.00 | |
4 | × | 0.7 | 3.54 | - | 3.51 | 3.49 | - | 3.45 | - | |||
4.5 | × | 0.75 | 4.01 | - | 3.98 | 3.96 | - | 3.92 | 3.94 | - | 3.88 | |
5 | × | 0.8 | 4.47 | - | 4.44 | 4.43 | - | 4.38 | 4.40 | - | 4.33 | |
6 | × | 1 | 5.34 | - | 5.31 | 5.30 | - | 5.25 | 5.28 | - | 5.21 | |
7 | × | 1 | 6.34 | - | 6.31 | 6.30 | - | 6.25 | 6.28 | - | 6.21 | |
8 | × | 1.25 | 7.18 | - | 7.14 | 7.12 | - | 7.07 | 7.10 | - | 7.03 | |
9 | × | 1.25 | 8.18 | - | 8.14 | 8.12 | - | 8.07 | 8.10 | - | 8.03 | |
10 | × | 1.5 | 9.03 | - | 8.99 | 8.97 | - | 8.91 | 8.94 | - | 8.86 | |
11 | × | 1.5 | 10.02 | - | 9.98 | 9.97 | - | 9.91 | 9.94 | - | 9.86 | |
12 | × | 1.75 | 10.86 | - | 10.82 | 10.79 | - | 10.73 | 10.77 | - | 10.69 | |
14 | × | 2 | 12.70 | - | 12.65 | 12.63 | - | 12.56 | 12.61 | - | 12.52 | |
16 | × | 2 | 14.70 | - | 14.65 | 14.63 | - | 14.56 | 14.61 | - | 14.52 | |
18 | × | 2.5 | 16.38 | - | 16.33 | 16.31 | - | 18.23 | 16.28 | - | 16.17 | |
20 | × | 2.5 | 18.38 | - | 18.33 | 18.31 | - | 18.23 | 18.28 | - | 18.17 | |
22 | × | 2.5 | 20.38 | - | 20.33 | 20.31 | - | 20.23 | 20.28 | - | 20.17 | |
24 | × | 3 | 22.07 | - | 22.01 | 21.98 | - | 21.09 | 21.96 | - | 21.85 | |
27 | × | 3 | 25.06 | - | 25.00 | 24.98 | - | 24.89 | 24.95 | - | 24.84 | |
30 | × | 3.5 | 27.75 | - | 27.68 | 27.66 | - | 27.56 | 27.63 | - | 27.50 | |
33 | × | 3.5 | 30.74 | - | 30.38 | 30.65 | - | 30.56 | 30.62 | - | 30.50 | |
36 | × | 4 | 33.43 | - | 33.37 | 33.33 | - | 33.23 | 33.29 | - | 33.16 | |
39 | × | 4 | 36.43 | - | 36.36 | 36.32 | - | 36.22 | 36.27 | - | 36.11 | |
42 | × | 4.5 | 39.11 | - | 39.04 | 39.01 | - | 38.90 | 38.97 | - | 38.82 | |
45 | × | 4.5 | 42.11 | - | 42.04 | 42.00 | - | 41.90 | 41.96 | - | 41.82 |