Torque Ratings for Grade 5 and Grade 8 Fasteners
All Jeep Vehicles
Torque Specifications
To determine what fastener is right for the job, you must be able to identify what grade fastener and torque rating you are using. Fasteners are graded by tensile strength and are easily identified by the number of slash marks on the head of the fastener. Torque is measured in foot pounds. |
THREAD SIZE | SAE GRADE 5 75% YIELD STRENGTH (PSI) =69000 | SAE GRADE 8 75% YIELD STRENGTH (PSI) = 98000 | ||
PLAIN Ft. Lbs. | ZINC PLATED Ft. Lbs. | PLAIN Ft. Lbs. | ZINC PLATED Ft. Lbs. | |
1/4 - 20 | 9 | 10 | 13 | 14 |
1/4 - 28 | 10 | 12 | 15 | 16 |
5/16 - 18 | 19 | 21 | 27 | 29 |
5/16 - 24 | 21 | 23 | 30 | 33 |
3/8 - 16 | 33 | 37 | 47 | 52 |
3/8 - 24 | 38 | 42 | 54 | 59 |
7/16 - 14 | 53 | 59 | 76 | 83 |
7/16 - 24 | 60 | 66 | 85 | 93 |
1/2 - 13 | 82 | 90 | 116 | 127 |
1/2 - 20 | 92 | 101 | 131 | 144 |
9/16 - 12 | 118 | 129 | 167 | 184 |
9/16 - 18 | 131 | 144 | 186 | 205 |
5/8 - 11 | 162 | 179 | 231 | 254 |
5/8 - 14 | 184 | 202 | 261 | 287 |
3/4 - 10 | 288 | 317 | 409 | 450 |
3/4 - 16 | 322 | 354 | 457 | 503 |
Courtesy of Tom Woods