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Torque Specifications per Bolt Grade

 

BOLT GRADES
U.S. CHEVELLESTUFF ~ The Chevelle Authority CHEVELLESTUFF ~ The Chevelle Authority CHEVELLESTUFF ~ The Chevelle Authority CHEVELLESTUFF ~ The Chevelle Authority
Metric CHEVELLESTUFF ~ The Chevelle Authority CHEVELLESTUFF ~ The Chevelle Authority CHEVELLESTUFF ~ The Chevelle Authority CHEVELLESTUFF ~ The Chevelle Authority
Steel Type Low Carbon
(soft)		 Medium Carbon
Heat Treat		 Medium Carbon
Alloy		 Medium Carbon
Alloy

 

 

SAE Bolt
Grade		 2 2 5 5 7 7 8 8 Socket Head
Cap Screw		 Socket Head
Cap Screw
Bolt Dia. Thread
per inch		 Dry Oiled Dry Oiled Dry Oiled Dry Oiled Dry Oiled
1/4" 20 4 3 8 8 10 8 12 8 14 11
1/4" 28 6 4 10 7 12 9 14 10 16 19
5/16" 18 9 7 17 13 21 16 25 18 29 23
5/16" 24 12 9 19 14 24 18 29 20 33 26
3/8" 16 16 12 30 23 40 30 45 35 49 39
3/8" 24 22 16 35 25 45 35 50 40 54 44
7/16" 14 24 17 50 35 60 45 70 55 76 61
7/16" 20 34 26 55 40 70 50 80 60 85 68
1/2" 13 38 31 75 55 95 70 110 80 113 90
1/2" 20 52 42 90 65 100 80 120 90 126 100
9/16" 12 52 42 110 80 135 100 150 110 163 130
9/16" 18 71 57 120 90 150 110 170 130 181 144
5'8" 11 98 78 150 110 140 140 220 170 230 184
5'8" 18 115 93 180 130 210 160 240 180 255 204
3/4" 10 157 121 260 200 320 240 380 280 400 320
3/4" 9 210 160 430 320 520 400 600 460 640 510
7/8" 9 210 160 430 320 520 400 600 460 640 510
7/8" 14 230 177 470 360 580 440 660 500 700 560
1" 8 320 240 640 480 800 600 900 680 980 780
1" 12 350 265 710 530 860 666 990 740 1060 845

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Metric 5.8 8.8 9.8 10.9              
Bolt
Dia.		 Oiled Oiled Oiled Oiled              
5mm 3.5 5 6 8              
6mm 6 9 10.5 12              
8mm 15 22 25 32              
10mm 29 44 61 62              
12mm 51 76 89 111              

 

 

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