|
|
Bolt Torque Chart
Grade 8 Bolt Drill & Torque Chart in foot pounds |
Size Threads/Inch |
Tap Drill Size |
Decimal Equivalent |
Torque - FT LBS. Dry |
Torque - FT LBS. Lubricated |
| 1/4" - 20 |
#7 |
.201 |
12 |
9 |
| 1/4" - 28 |
#3 |
.213 |
14 |
10 |
| 5/16" - 24 |
F |
.257 |
25 |
18 |
| 5/16" - 24 |
I |
.272 |
25 |
20 |
| 3/8" - 16 |
5/16 |
.3125 |
45 |
35 |
| 3/8" - 24 |
Q |
.332 |
50 |
35 |
| 7/16" - 14 |
U |
.368 |
70 |
55 |
| 7/16" - 20 |
25/64 |
.3906 |
80 |
60 |
| 1/2" - 13 |
27/64 |
.4219 |
110 |
80 |
| 1/2" - 20 |
29/64 |
.4531 |
120 |
90 |
| 9/16" - 12 |
31/64 |
.4844 |
150 |
110 |
| 9/16" - 18 |
33/64 |
.5156 |
170 |
130 |
| 5/8" - 11 |
17/32 |
.5312 |
220 |
170 |
| 5/8" - 18 |
37/64 |
.5781 |
240 |
180 |
| 3/4" - 10 |
21/32 |
.6562 |
380 |
280 |
| 3/4" - 16 |
11/16 |
.6875 |
420 |
320 |
| 7/8" - 9 |
49/64 |
.7656 |
600 |
460 |
| 7/8" - 14 |
13/16 |
.8125 |
660 |
500 |
| 1" - 8 |
7/8 |
.875 |
900 |
680 |
| 1" - 12 |
59/64 |
.9219 |
1000 |
740 |
| 1" - 14 |
15/16 |
.9375 |
1020 |
760 |
Lubricated Includes: Lubricants - Plating - Hardened Washers
Tap Drills: Allow Approximately 75% Full Thread |
This technical information is supplied as a courtesy. All-Pro Fasteners, Inc. neither employs nor maintains an engineering or technical staff, and All-Pro is merely supplying certain manufacturing, technical, and/or design specifications and data received by All-Pro Fasteners, Inc. from the products’ manufacturer or taken from consensus standards, and is in no manner originated, developed, created, enhanced, altered, or approved by All-Pro Fasteners, Inc.
| |
