Kuka IONTECKR 70 R2100 - Appendix; Tightening Torques

12 Appendix
12.1 Tightening torques
Tightening torques
The following tightening torques (Nm) are valid for screws and nuts where
no other specifications are given.
The specified values apply to lightly oiled black (e.g. phosphated) and
coated (e.g. mech. galv., zinc flake plating, screw locking elements)
screws and nuts.
Strength class
Thread 8.8 10.9 12.9
M1.6 0.17 Nm 0.24 Nm 0.28 Nm
M2 0.35 Nm 0.48 Nm 0.56 Nm
M2.5 0.68 Nm 0.93 Nm 1.10 Nm
M3 1.2 Nm 1.6 Nm 2.0 Nm
M4 2.8 Nm 3.8 Nm 4.4 Nm
M5 5.6 Nm 7.5 Nm 9.0 Nm
M6 9.5 Nm 12.5 Nm 15.0 Nm
M8 23.0 Nm 31.0 Nm 36.0 Nm
M10 45.0 Nm 60.0 Nm 70.0 Nm
M12 78.0 Nm 104.0 Nm 125.0 Nm
M14 125.0 Nm 165.0 Nm 195.0 Nm
M16 195.0 Nm 250.0 Nm 305.0 Nm
M20 370.0 Nm 500.0 Nm 600.0 Nm
M24 640.0 Nm 860.0 Nm 1030.0 Nm
M30 1330.0 Nm 1700.0 Nm 2000.0 Nm
Strength class
Thread 8.8
ISO7991
Allen screw
10.9
ISO7380, ISO07381
Fillister head
screw
M3 0.8 Nm 0.8 Nm
M4 1.9 Nm 1.9 Nm
M5 3.8 Nm 3.8 Nm
Strength class
Thread 10.9
DIN7984
Pan head screws
M4 2.8 Nm
Tighten M5 domed cap nuts with a torque of 4.2 Nm.
KR IONTEC
MA KR IONTEC V4 | Issued: 11.05.2021 www.kuka.com | 335/344
Appendix