六角头螺栓和六角螺母用沉孔尺寸:摘自GB/T 152.4-1988
| 螺纹规格d |
d2 |
d3 |
d1 |
| 1.6 |
5 |
- |
1.8 |
| 2 |
6 |
- |
2.4 |
| 2.5 |
8 |
- |
2.9 |
| 3 |
9 |
- |
3.4 |
| 4 |
10 |
- |
4.5 |
| 5 |
11 |
- |
5.5 |
| 6 |
13 |
- |
6.6 |
| 8 |
18 |
- |
9 |
| 10 |
22 |
- |
11 |
| 12 |
26 |
16 |
13.5 |
| 14 |
30 |
18 |
15.5 |
| 16 |
33 |
20 |
17.5 |
| 18 |
36 |
22 |
20 |
| 20 |
40 |
24 |
22 |
| 22 |
43 |
26 |
24 |
| 24 |
48 |
28 |
26 |
| 27 |
53 |
33 |
30 |
| 30 |
61 |
36 |
33 |
| 33 |
66 |
39 |
36 |
| 36 |
71 |
42 |
39 |
| 39 |
76 |
45 |
42 |
| 42 |
82 |
48 |
45 |
| 45 |
89 |
51 |
48 |
| 48 |
98 |
56 |
52 |
| 52 |
107 |
60 |
56 |
| 55 |
112 |
68 |
62 |
| 60 |
118 |
72 |
66 |
| 64 |
125 |
76 |
70 |
