DANSMC BOLT TORQUE GUIDE
Use as a Very Loose & Gooey guide only.
For best results
Check your Shop Manual !
US Bolts
Maximum Torque, in foot-pounds, for clean, dry threads
| Bolt size - Thread pitch |
Grade 2 |
Grade 5 |
Grade 8 |
| 1/4-20 |
6 |
10 |
12 |
| 1/4-28 |
7 |
12 |
15 |
| 5/16-18 |
13 |
20 |
24 |
| 5/16-24 |
14 |
22 |
27 |
| 3/8-16 |
23 |
36 |
44 |
| 3/8-24 |
26 |
40 |
48 |
| 7/16-14 |
37 |
52 |
63 |
| 7/16-20 |
41 |
57 |
70 |
| 1/2-13 |
57 |
80 |
98 |
| 1/2-20 |
64 |
90 |
110 |
| 9/16-12 |
82 |
120 |
145 |
| 9/16-18 |
91 |
135 |
165 |
| 5/8-11 |
111 |
165 |
210 |
| 5/8-18 |
128 |
200 |
245 |
| 3/4-10 |
200 |
285 |
335 |
| 3/4-16 |
223 |
315 |
370 |
Metric Bolts
Maximum Torque, in foot-pounds, for clean, dry threads
Check your Shop Manual !
| Bolt size |
Low Grade |
Grade 8.8 |
Grade 10.9 |
Grade 12.9 |
| 6mm |
3-5 |
7 |
10 |
12 |
| 8mm |
8-12 |
17 |
24 |
29 |
| 10mm |
15-22 |
33 |
47 |
57 |
| 12mm |
39 |
59 |
83 |
100 |
| 14mm |
60 |
101 |
131 |
158 |
| 16mm |
60-94 |
146 |
202 |
247 |
| 18mm |
60-130 |
201 |
283 |
340 |
| 20mm |
166-188 |
285 |
401 |
482 |