All information, illustrations and specifications in these Operating Instructions are based on the latest information available at the time of
publication. We reserve the right to make design changes at any time without prior notification.
54
10.0. Technical Specifications
10.4. Metric bolt and cap screw torque values
Property
Class and
Head
Markings
Property
Class and
Nut
Markings
class 4.8
class 8.8 or 9.8
class 10.9
class 12.9
Lubricated *
Dry **
Lubricated *
Dry **
Lubricated *
Dry **
Lubricated *
Dry **
Size
N-m lb-ft N-m lb-ft N-m lb-ft N-m lb-ft N-m lb-ft N-m lb-ft N-m lb-ft N-m lb-ft
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 92 190 140 240 175 275 200 350 255 320 240 400 300
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 1300 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
DO NOT use these values if a different torque
value or tightening procedure is given for a
specific application. Torque values listed are for
general use only. Check tightness of fasteners
periodically.
Shear bolts are designet to fail under
predetermined loads. Always replace shear bolt
with identical property class
Fasteners should be replaced with the same or
higher property class. If higher property class
fasteners used, these should only be tightened to
the strength of the original.
Make sure fasteners threads are clean and that you
properly start thread engagement. This will prevent
therm from failing when tightening.
Tighten plastic insert or crimped steel-type lock
nuts to approximately 50 percent of the dry torque
shown in the chart, applied to the nut, not to the
bolt head. Tighten toothed or serrated-type lock
nuts to the full torque value.
* “
Lubricated“ means coated with a lubricant such as engine
oil, or fasteners with phossphate and oil coatings.
** “
Dry“ means plain or zinc platend without any
lubrication
.
