McHale W2020 Round Bale Wrapper
70
10.5 Tightening torque values
It is important that the correct torques for fasteners are adhered to. Below are tables of
recommended torques for these. These are to be used unless torques are otherwise
specified. These values are for general use only. Check tightness of all fasteners
periodically. Torque values are in Nm (Newton metres).
Nuts and bolts Black, Phosphated or Galvanized
Grade marking 8.8 10.9 12.9
Dimensions Metric standard thread
Hex. bolts M4 2.7 3.8 4.6
DIN 931 M5 5.5 8 9.5
DIN 933 M6 10 14 16
M8 23 33 40
Socket head M10 45 63 75
Cap screws M12 78 110 130
DIN 912 M14 122 175 210
M16 195 270 325
Hex. nuts M18 260 370 440
DIN 934 M20 370 525 630
M22 510 720 870
M24 640 900 1,080
M27 980 1,400 1,650
M30 1,260 1,800 2,160
Dimensions Metric fine thread
Hex. bolts M8 x 1 25 35 42
DIN 960 M10 x 1.25 48 67 80
DIN 961 M12 x 1.25 88 125 150
M12 x 1.5 82 113 140
Hex. nuts M14 x 1.5 135 190 225
DIN 934 M16 x 1.5 210 290 345
M18 x 1.5 300 415 505
M20 x 1.5 415 585 700
M22 x 1.5 560 785 945
M24 x 2 720 1,000 1,200
M27 x 2 1,050 1,500 1,800
M30 x 2 1,450 2,050 2,500
NOTE:
For nuts and bolts from different materials and/or surface finishes a
torque value must be used that is lower than the value stated above.
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