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Bolt Load-Torque Chart ( Guideline Only ) |
BOLT TENSION BASED ON 60 PERCENT YIELD |
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Torque-FT. LBS. |
Bolt Size
DIA x TPI |
HEX Nut Across Flat |
Stress Area
IN2 |
Min Yield Strenth (PSI) |
Bolt Tension (LBS) |
Disc Washer Dry Film
K=1.22
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| 3/4 x 10 |
1-1/4" |
0.334 |
105,000 |
21,060 |
161 |
| 7/8 x 9 |
1-7/16" |
0.461 |
105,000 |
29,074 |
259 |
| 1x 8 |
1-5/8" |
0.605 |
105,000 |
38,143 |
388 |
| 1-1/8 x 8 |
1-13/16" |
0.790 |
105,000 |
49,773 |
569 |
| 1-1/4 x 8 |
2" |
0.999 |
105,000 |
62,949 |
800 |
| 1-3/8 x 8 |
2-3/16" |
1.233 |
105,000 |
77,671 |
1,086 |
| 1-1/2 x 8 |
2-3/8" |
1.491 |
105,000 |
93,938 |
1,433 |
| 1-5/8 x 8 |
2-9/16" |
1.774 |
105,000 |
111,751 |
1,846 |
| 1-3/4 x 8 |
2-3/4" |
2.081 |
105,000 |
131,109 |
2,333 |
| 1-7/8 x 8 |
2-15/16" |
2.413 |
105,000 |
152,013 |
2,898 |
| 2 x 8 |
3-1/8" |
2.769 |
105,000 |
174,462 |
3,547 |
| 2-1/8 x 8 |
3-5/16" |
3.150 |
105,000 |
198,456 |
4,287 |
| 2-1/4 x 8 |
3-1/2" |
3.555 |
105,000 |
223,996 |
5,124 |
| 2-3/8 x 8 |
3-11/16" |
3.985 |
105,000 |
251,081 |
6,063 |
| 2-1/2 x 8 |
3-7/8" |
4.440 |
95,000 |
253,073 |
6,432 |
| 2-3/4 x 8 |
4-1/4" |
5.422 |
95,000 |
309,076 |
8,641 |
| 3 x 8 |
4-5/8" |
6.503 |
95,000 |
370,672 |
11,306 |
| 3-1/4 x 8 |
5" |
7.682 |
95,000 |
437,862 |
14,468 |
| 3-1/2 x 8 |
5-3/8" |
8.959 |
95,000 |
510,644 |
18,170 |
| 3-3/4 x 8 |
5-3/4" |
10.334 |
95,000 |
589,020 |
22,456 |
| 4 x 8 |
6-1/8" |
11.807 |
95,000 |
672,989 |
27,368 |
| 4-1/4 x 8 |
6-1/2" |
13.378 |
85,000 |
682,282 |
29,480 |
| 4-1/2 x 8 |
6-7/8" |
15.047 |
85,000 |
767,421 |
35,109 |
| 4-3/4 x 8 |
7-1/4" |
16.815 |
85,000 |
857,564 |
41,413 |
| 5 x 8 |
7-5/8" |
18.681 |
85,000 |
952,711 |
48,429 |
| 5-1/4 x 8 |
8" |
20.644 |
85,000 |
1,052,863 |
56,197 |
| 5-1/2 x 8 |
8-3/8" |
22.706 |
85,000 |
1,158,019 |
64,753 |
| 5-3/4 x 8 |
8-3/4" |
24.866 |
85,000 |
1,268,180 |
74,136 |
| 6 x 8 |
9-1/8" |
27.124 |
85,000 |
1,383,345 |
84,384 |
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