Lissmac SBM-XS 300 G1E1 ALU MIX, Operating Manual, Page: 47 / 53

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Grinding machine SBM-XS 300 G1E1 ALU MIX 47
8.3 Tightening torque for standard metric thread
All maximum permissible tightening torques listed here apply to threaded
connections with ISO 4014 – 4018 hexagon head screws and ISO 4762
hexagon socket head screws, as well as screws with analogous head strength
for a friction coefficient of µtot = 0.12.
Maximum tightening torque
Maximum Ma in
Nm
Hexagon head screws /
hexagon socket head screws /
hex nuts ISO 898/1 strength classes
8.8 10.9 12.9
M4 2.5 4 4.5
M5 5 7.5 9
M6 9 13 15
M7 14 20 25
M8 22 30 35
M10 45 65 75
M12 75 105 125
M14 115 170 200
M16 180 260 310
M18 260 370 430
M20 360 520 600
M22 490 700 820
M24 620 890 1040