螺纹钻孔直径对照表

9 9.153 8.917 9.3 9.378 9.188
10.5 10.676 10.376 10.8 10.912 10.647
11 11.153 10.917
12.5 12.676 12.376 12.8 12.912 12.647
13 13.153 12.917 14.5 14.676 14.376
26.5 26.771 26.211 M14*1 29.5 29.771 29.211 M16*1.5
32 32.27 31.67 M16*1 35 35.27 34.67 M18*2
M18*1.5
M18*1 M20*2
M20*1.5
M20*1 M22*2 M22*1.5 M22*1 M24*2 M24*1.5 M24*1 M27*2 M27*1.5 M27*1 M30*3 M30*2 M30*1.5 M30*1 M33*3 M33*2 M33*1.5 M36*3 M36*2 M36*1.5 M39**3 M39*2
7/8 -14
28.2
28.418 27.877 1 1/4 -11.5 37.784 37.991 37.576
1 -11 1 1/8 -11
30.6 35.2
30.931 30.291 1 1/2 -11.5 35.579 34.939 2 -11.5
43.85 55.86
44.06 43.646 56.07 55.659
M39*1.5
37.5 37.676 37.376
55°圆柱内螺纹（Rp)
55°圆锥内螺纹（Rc)
规格
钻孔直径
规格
钻孔直径
标准直径 最大
最小
标准直径 最大
最小
1/16 -28
6.5 6.632
6.49 1/16 -28
6.3 6.384 6.244
1/8 -28
8.5 8.637
8.495 1/8 -28
19.409 19.555 19.263 20.996 21.14 20.85
7/16 -14 1/2 -13
9.35 9.55 9.149 15/16 -20 10Βιβλιοθήκη Baidu798 11.013 10.584 1 -20
22.585 22.731 22.439 24.172 24.318 24.026
9/16 -12
12 12.21 11.835 M10*1 14 14.21 13.835 M10*0.75
15.5 15.744 15.294 M12*1.5 17.5 17.744 17.294 M12*1.25
19.5 19.744 19.294 M12*1
21 21.252 20.752 M14*1.5 24 24.252 23.752 M14*1.25
44.7 45.026 44.664 1 1/2 -11
44 44.232 43.869
2 -11
56.5 56.837 56.475 2 -11
55.6 55.844 55.412
螺纹钻孔直径对照表
55°非密封圆柱内螺纹（G)
60°圆锥内螺纹
规格
钻孔直径
规格
钻孔直径
1/16 -28
标准直径 最大
32.8 36
33.096 36.271
32.634 35.809
统一螺纹（UNC）
统一螺纹（UNEF）
规格
钻孔直径
规格
钻孔直径
标准直径 最大 最小
标准直径 最大 最小
N0.1 -64
1.5 1.585 1.435 N0.12 -32
4.722 4.816 4.628
N0.2 -56 N0.3 -48
公制细牙螺纹
钻孔直径
标准直径 最大 最小 0.8 0.821 0.783
1.725 2.7
1.785 2.721
1.729 2.621
3.5 3.599 3.459 4.5 4.599 4.459
5.3 5.378 5.188 6.3 6.378 6.188
7 7.153 6.917
7.3 7.378 7.188 8.8 8.912 8.647
38.12 38.483 38.16 39.909 40.07 39.748
8.666 10.13
N0.6 -32 N0.8 -32
2.77 3.418
2.899 3.528
2.65 1/2 -28 3.307 9/16 -24
11.824 11.93 11.717 13.265 13.388 13.142
N0.10 -24
3.814 3.949 3.68 5/8 -24
14.85 14.975 14.729
7/8 -9 1 -8
19.458 19.748 19.169 1 1/4 -18 22.28 22.598 21.963 1 5/16 -18
30.394 30.555 30.233 31.97 32.133 31.81
1 1/8 -7 1 1/4 -7
24.998 25.349 24.648 1 3/8 -18 28.173 28.524 27.823 1 7/16 -18
3/4 -14
24 24.259 23.975 3/4 -14
23.5 23.663 23.378
1 -11
30.2 30.472
30.11 1
-11
29.6 29.822 29.459
1 1/4 -11
38.8 39.133 38.771 1 1/4 -11
38.2 38.339 37.976
1 1/2 -11
3/8 -19 1/2 -14
15.2 19
15.395 14.95 3/8 -18 19.172 18.631 1/2 -14
14.416 14.284 14.548 17.813 17.642 17.983
5/8 -14 3/4 -14
21 24.5
21.128 20.587 3/4 -14 23.127 23.297 22.957 24.658 24.117 1 -11.5 29.059 29.266 28.851
12.761 14.348
3/4 -16 7/8 -14
17.5 20.5
17.678 20.675
17.33 20.26
1 -12 1 1/8 -12
23.3 26.5
23.571 26.746
23.109 26.284
1 1/4 -12
29.6 29.921 29.459
1 3/8 -12 1 1/2 -35
N0.12 -24 1/4 -20
4.46 5.121
4.59 5.267
4.34 11/16 -24 4.975 3/4 -20
16.44 16.563 16.317 17.821 17.967 17.675
5/16 -18 3/8 -16
6.571 7.979
6.733 8.158
6.41 13/16 -20 7.8 7/8 -20
2.7
2.74 2.551
2.9
3.022
2.817
1 1/2 -11.5 43.85 44.06 44.323 N0.8 -36
3.5
3.606
3.401
2 -11.5 55.86 56.07 56.363 N0.10 -32 N0.12 -28
4.1
4.165
3.967
4.6
4.724
4.503
8.3 8.388 8.249
1/4 -19
11.4 11.549 11.341 1/4 -19
11 11.174 10.962
3/8 -19
14.9 15.045 14.846 3/8 -19
14.5 14.658 14.448
1/2 -14
18.6 18.773 18.489 1/2 -14
18.1 18.263 17.979
1.78 2.14
1.872 2.04
1.694 1/4 -32 1.94 5/16 -32
5.585 7.172
5.679 7.267
5.491 7.079
N0.4 -40 N0.5 -40
2.27 2.593
2.385 2.698
2.156 3/8 -32 2.487 7/16 -28
8.76 8.854 10.237 10.343
33.559 33.72 33.398 35.07 35.233 34.91
1 3/8 -6
32.8 31.12 30.343 1 1/2 -18
36.734 36.896 36.573
1 1/2 -6 1 3/4 -5
33.907 34.295 33.518 1 9/16 -18 39.38 39.81 38.95 1 5/8 -18
19.153 20.21
20.676 21.153
22.21 22.676 23.153
25.21 25.676 26.153 27.252
28.21 28.676 29.153 30.252
31.21 31.676 33.252
34.21 34.676 36.252
37.21
18.917 19.835 20.376 20.917 21.835 22.376 22.917 24.835 25.376 25.917 26.752 27.835 28.376 28.917 29.752 30.835 31.376 32.752 33.835 34.376 35.752 36.835
15 15.153 14.917 16 16.21 15.835
16.5 16.676 16.376
17 17.153 16.917 18 18.21 17.835
18.5 18.676 18.376
19 20 20.5 21 22 22.5 23 25 25.5 26 27 28 28.5 29 30 31 31.5 33 34 34.5 36 37
最小
标准直径 最大 最小
6.7
6.843 6.561 1/16 -27
6.135 6.223 6.046
1/8 -28 1/4 -19
8.7 11.7
8.848 8.566 1/8 -27 11.89 11.445 1/4 -18
8.48 8.568 8.393 10.996 11.128 10.864
1/4 -28 5/16 -24
5.5
5.588
5.367
6.9
7.035
6.791
3/8 -24 7/16 -20
8.5
8.636
9.9 10.033
8.379 9.738
1/2 -20
11.5 11.607 11.326
9/16 -18 5/8 -18
12.9 14.5
13.081 14.681
12.9 13.081 12.761 1 1/16 -18 25.622 25.784 25.461
5/8 -11 3/4 -10
13.622 13.868 13.376 1 1/8 -18 16.566 16.832 16.299 1 3/16 -18
27.21 27.371 27.049 28.797 28.959 28.636
最小
1/8 -27
8.48
8.8 8.636 N0.0 -80
1.25
1.305
1.18
1/4 -18 3/8 -18
11.35 14.77
11.47 11.227 N0.1 -72 14.9 14.656 N0.2 -64
1.55 1.85
1.612 1.912
1.473 1.755
1/2 -14 3/4 -14
3.3 3.422 3.242 M4*0.5 4.2 4.334 4.134 M5*0.5
5 5.153 4.917 M6*0.75 6 6.153 5.917 M7*0.75
6.8 6.912 6.647 M8*1
8.5 8.676 8.376 M8*0.75 10.25 10.441 10.106 M10*1.25
1 1/4 -11 1 1/2 -11
39.2 45
39.592 38.952 45.485 44.845
1 3/4 -11 2 -11
51
51.428 50.788
57
57.296 56.656
60°圆柱内螺纹（NPSC)
统一螺纹（UNF）
规格
钻孔直径
规格
钻孔直径
标准直径 最大
最小
标准直径 最大
规格
M1 M2 M3 M4 M5 M6 M7 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39
公制螺纹
钻孔直径
规格
标准直径 最大 最小 0.75 0.785 0.729 M1*0.2
1.6 1.679 1.567 M2*0.25 2.5 2.599 2.459 M3*0.35
17.813 17.642 18.161 N0.3 -56 23.127 23.297 23.495 N0.4 -48
2.1
2.197
2.024
2.4
2.458
2.271
1 -11.5 29.059 29.266 29.489 N0.5 -44 1 1/4 -11.5 37.784 37.991 38.252 N0.6 -40