Recommended Torque Values
For SAE Grade 2, 5 and 8 Bolts & Cap Screws
Torque Values listed are suggested on parts carrying residual oil of manufacture. These Values do not apply to plated or otherwise lubricated parts.
Bolt Size |
Threds per in. |
Grade 2 |
Grade 5 |
Grade 8 |
|---|---|---|---|---|
inches |
Coarse / Fine |
ft./lbs. |
ft./lbs. |
ft./lbs. |
1/4 (.250) |
20 |
5 |
8 |
12 |
|
28 |
6 |
10 |
14 |
5/16 (.3125) |
18 |
11 |
17 |
24 |
|
24 |
13 |
19 |
27 |
3/8 (.375) |
16 |
20 |
30 |
45 |
|
24 |
22 |
35 |
50 |
7/16 (.4375) |
14 |
30 |
50 |
70 |
|
20 |
35 |
55 |
78 |
1/2 (.50) |
13 |
50 |
75 |
105 |
|
20 |
55 |
90 |
120 |
9/16 (.5625) |
12 |
65 |
110 |
155 |
|
18 |
75 |
120 |
170 |
5/8 (.625) |
11 |
90 |
150 |
210 |
|
18 |
105 |
180 |
240 |
3/4 (.750) |
10 |
145 |
270 |
375 |
|
16 |
155 |
300 |
420 |
7/8 (.875) |
9 |
160 |
395 |
610 |
|
14 |
180 |
435 |
675 |
1 (1.0) |
8 |
210 |
590 |
910 |
|
12 |
230 |
650 |
1,000 |
|
14 |
240 |
655 |
1,015 |