38
Mechanical Stationary
Operator’s Manual
300-0804 © 05/2020
APPENDICES
The amount of twisting force (torque) on a bolt or screw is normally measured by the use of a torque wrench. The correct
tightening of bolts is one of the most singularly important operations done when repairing an engine or component.
Correct torque can eliminate deformation of mating surfaces. It can also eliminate bolt breakage, thread stripping, water
and oil leaks.
APPENDIX D - TORQUE GUIDE (QUICK REFERENCE)
S.A.E. Bolt Grade and Recommended Torque Chart
Virtually every bolt and screw on an engine or component has a torque specification for correct tightening. It is imperative
that the manufacturer’s recommendation be followed for correct tightening sequence and tightness to eliminate problems
created by bolts and screws being too tight or too loose.
Supreme’s torque reference chart is for Supreme parts and components only.
S.A.E. Grade 5 Marking
S.A.E. Grade 8 Marking
1/4" 2,025 6 ft. lbs. 8 Nm M5 5 ft. lbs. 7 Nm 7 ft. lbs. 9 Nm
5/16" 3,338 13 ft. lbs. 18 Nm M6 9 ft. lbs. 12 Nm 12 ft. lbs. 16 Nm
3/8" 4,950 23 ft. lbs. 31 Nm M8 22 ft. lbs. 30 Nm 30 ft. lbs. 40 Nm
7/16" 6,788 37 ft. lbs. 50 Nm M10 40 ft. lbs. 55 Nm 55 ft. lbs. 75 Nm
1/2" 9,075 57 ft. lbs. 77 Nm M12 74 ft. lbs. 100 Nm 100 ft. lbs. 135 Nm
9/16" 11,625 82 ft. lbs. 111 Nm M14 118 ft. lbs. 160 Nm 159 ft. lbs. 215 Nm
5/8" 14,400 112 ft. lbs. 152 Nm M16 180 ft. lbs. 245 Nm 247 ft. lbs. 335 Nm
3/4" 21,300 200 ft. lbs. 271 Nm M20 354 ft. lbs. 480 Nm 479 ft. lbs. 650 Nm
7/8" 29,475 322 ft. lbs. 436 Nm M24 608 ft. lbs. 825 Nm 830 ft. lbs. 1125 Nm
1" 38,625 483 ft. lbs. 655 Nm
1-1/8" 42,375 596 ft. lbs. 808 Nm
1-1/4" 53,775 840 ft. lbs. 1139 Nm
1/4" 2,850 9 ft. lbs. 12 Nm
5/16" 4,725 18 ft. lbs. 24 Nm
3/8" 6,975 33 ft. lbs. 45 Nm
7/16" 9,600 52 ft. lbs. 71 Nm
1/2" 12,750 80 ft. lbs. 108 Nm
9/16" 16,325 115 ft. lbs. 156 Nm
5/8" 20,325 159 ft. lbs. 216 Nm
3/4" 30,075 282 ft. lbs. 382 Nm
7/8" 41,550 454 ft. lbs. 615 Nm
1" 54,525 682 ft. lbs. 925 Nm
1-1/8" 68,700 966 ft. lbs. 1310 Nm
1-1/4" 87,225 1363 ft. lbs. 1848 Nm
SAE GRADE 5 – Coarse Thread
SAE GRADE 8 – Coarse Thread
1/4" 2,025 6 ft. lbs. 8 Nm M5 5 ft. lbs. 7 Nm 7 ft. lbs. 9 Nm
5/16" 3,338 13 ft. lbs. 18 Nm M6 9 ft. lbs. 12 Nm 12 ft. lbs. 16 Nm
3/8" 4,950 23 ft. lbs. 31 Nm M8 22 ft. lbs. 30 Nm 30 ft. lbs. 40 Nm
7/16" 6,788 37 ft. lbs. 50 Nm M10 40 ft. lbs. 55 Nm 55 ft. lbs. 75 Nm
1/2" 9,075 57 ft. lbs. 77 Nm M12 74 ft. lbs. 100 Nm 100 ft. lbs. 135 Nm
9/16" 11,625 82 ft. lbs. 111 Nm M14 118 ft. lbs. 160 Nm 159 ft. lbs. 215 Nm
5/8" 14,400 112 ft. lbs. 152 Nm M16 180 ft. lbs. 245 Nm 247 ft. lbs. 335 Nm
3/4" 21,300 200 ft. lbs. 271 Nm M20 354 ft. lbs. 480 Nm 479 ft. lbs. 650 Nm
7/8" 29,475 322 ft. lbs. 436 Nm M24 608 ft. lbs. 825 Nm 830 ft. lbs. 1125 Nm
1" 38,625 483 ft. lbs. 655 Nm
1-1/8" 42,375 596 ft. lbs. 808 Nm
1-1/4" 53,775 840 ft. lbs. 1139 Nm
1/4" 2,850 9 ft. lbs. 12 Nm
5/16" 4,725 18 ft. lbs. 24 Nm
3/8" 6,975 33 ft. lbs. 45 Nm
7/16" 9,600 52 ft. lbs. 71 Nm
1/2" 12,750 80 ft. lbs. 108 Nm
9/16" 16,325 115 ft. lbs. 156 Nm
5/8" 20,325 159 ft. lbs. 216 Nm
3/4" 30,075 282 ft. lbs. 382 Nm
7/8" 41,550 454 ft. lbs. 615 Nm
1" 54,525 682 ft. lbs. 925 Nm
1-1/8" 68,700 966 ft. lbs. 1310 Nm
1-1/4" 87,225 1363 ft. lbs. 1848 Nm
SAE GRADE 5 – Coarse Thread
SAE GRADE 8 – Coarse Thread
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