Metric Bolt and Cap Screw Torque Values
Do not use these values if a different torque value or tightening procedure is given for specific application.
Torque values listed are for general use only. Check tightness of fasteners periodically.
Shear bolts are designed to fail under predetermined loads. Always replace shear bolts with identical
property class fasteners.
Fasteners should be replaced with the same or higher property class. If higher property class fasteners are
used, these should only be tightened to strength of original.
Make sure fastener threads are clean and that the threads are properly started. This will prevent them from
cross threading or galling when tightened.
Tighten plastic insert or crimped type steel locknuts to approximately 50% of dry torque indicated on chart.
Apply torque to the nut - not the bolt head. Tighten toothed or serrated type locknuts to full torque value.
LUBRICATED means coated with lubricant. DRY means plain or zinc plated without any type of lubricant.
Size Class 4.8 Class 8.8 and 9.8 Class 10.9 Class 12.9
Lubricated Dry Lubricated Dry Lubricated Dry Lubricated Dry
N•m ft•lb N•m ft•lb N•m ft•lb N•m ft•lb N•m ft•lb N•m ft•lb N•m ft•lb N•m ft•lb
M6 4.8 3.5 6 4.5 9 6.5 11 8.5 13 9.5 17 12 15 11.5 19 14.5
M8 12 8.5 15 11 22 16 28 20 32 24 40 30 37 28 47 35
M10 23 17 29 21 43 32 55 40 63 47 80 60 75 55 95 70
M12 40 29 50 37 75 55 95 70 110 80 140 105 130 95 165 120
M14 63 47 80 60 120 88 150 110 175 130 225 165 205 150 260 190
M16 100 73 125 92 190 140 240 175 275 200 350 225 320 240 400 300
M18 135 100 175 125 260 195 330 250 375 275 475 350 440 325 560 410
M20 190 140 240 180 375 275 475 350 530 400 675 500 625 460 800 580
M22 260 190 330 250 510 375 650 475 725 540 925 675 850 625 1075 800
M24 330 250 425 310 650 475 825 600 925 675 1150 850 1075 800 1350 1000
M27 490 360 625 450 950 700 1200 875 1350 1000 1700 1250 1600 1150 2000 1500
M30 675 490 850 625 1600 950 1650 1200 1850 1350 2300 1700 2150 1600 2700 2000
M33 900 675 1150 850 1750 1300 2200 1650 2500 1850 3150 2350 2900 2150 3700 2750
M36 1150 850 1450 1075 2250 1650 2850 2100 3200 2350 4050 3000 3750 2750 4750 3500
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