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| Heavy hex head bolts |
The finish:plain phos phined,black,z/p,hdg,dacromet
STANDARD：DIN6914/6915/6916,GB1228/1229/1230,A325(A325M)/A563(563M)/F436(F436M)/A490(A490M)/A563(A563M)F436(F436M),JIS1180 |
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| Bolt dimension |
| d |
12 |
16 |
20 |
22 |
24 |
27 |
30 |
| S |
21 |
27 |
34 |
36 |
41 |
46 |
50 |
| k |
7.5 |
10 |
12.5 |
14 |
15 |
17 |
18.7 |
| L |
35~75 |
45~130 |
50~160 |
55~220 |
60~240 |
65~260 |
70~260 |
| KN |
| |
M12 |
M16 |
M20 |
M22 |
M24 |
M27 |
M30 |
螺栓硬度 |
| 8.85 |
70~86.8 |
130~162 |
203~252 |
251~312 |
293~364 |
381~473 |
466~518 |
HRC24~HRC31 |
| 10.99 |
87.7~104.5 |
163~195 |
255~304 |
315~376 |
367~438 |
477~569 |
583~696 |
HRC33~HRC39 |
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| Nut dimension |
| d |
12 |
16 |
20 |
22 |
24 |
27 |
30 |
| S |
21 |
27 |
34 |
36 |
41 |
46 |
50 |
| m |
12.3 |
17.1 |
20.7 |
23.6 |
24.2 |
27.6 |
30.7 |
| E |
22.8 |
29.6 |
37.3 |
39.6 |
45.2 |
50.9 |
55.4 |
| KN |
| d |
M12 |
M16 |
M20 |
M22 |
M24 |
M27 |
M30 |
螺栓硬度 |
| 8H |
70 |
130 |
203 |
251 |
293 |
381 |
466 |
HRB96~HRC22 |
| 10H |
87.7 |
163 |
255 |
315 |
367 |
477 |
583 |
HRB98~HRC28 |
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| Washer dimension |
| d |
12 |
16 |
20 |
22 |
24 |
27 |
30 |
| d1 |
13 |
17 |
21 |
23 |
25 |
28 |
31 |
| d2 |
25 |
33 |
40 |
42 |
47 |
52 |
56 |
| s |
3 |
4 |
4 |
5 |
5 |
5 |
5 |
| Construction of high-strength connecting the axial force deputy |
| d |
M16 |
M20 |
M22 |
M24 |
M27 |
M30 |
| 8.8S KN |
75 |
120 |
150 |
170 |
225 |
275 |
| 10.9S KN |
110 |
170 |
210 |
250 |
320 |
390 |
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| Mechanical Property |
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| 1040-1240 |
≥940 |
≥10 |
≥42 |
≥59 |
0.110-0.150 |
≤0.01 |
| Calculation method of bolt length |
| D |
12 |
16 |
20 |
22 |
24 |
27 |
30 |
| L1 |
25 |
30 |
35 |
40 |
45 |
50 |
55 |
L(Bolt length)=Connecting plate thickness+L1
L1=Nut thickness+2×washer thickness+（2~3）thred pitch |
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