标准号: GB70-76 高强度圆柱头内六角螺栓
5 6 8 10 12 14 16 18 20 22 24 27 30 36 42
20 6 6 8.8 14.1 24.9 40.1
25 6.6 6.6 9.9 15.3 26.1 40.1 52.8
30 7.2 6.9 11 17.1 27.6 40.1 52.8 111 140
35 7.6 8.3 12.1 18.5 29.1 43.7 57.4 111 140 175 215
40 8.6 9.4 13.6 20.1 31 47.4 61.8 111 140 189 229
45 9.4 10.5 15.3 22 33.7 50.8 67.2 111 140 206 246
50 10.5 12.6 16.8 23.9 36.2 54.5 72.8 100 126 221 262 443
55 13.3 15.1 18.4