Overview of screw tightening torques

Motor cover

Size	Type, size and length	Number	Tightening torque
GM2	Fillister-head screw M5x65	3x	4 Nm
GM2	Fillister-head screw M5x45	1x	4 Nm
GM4	Fillister-head screw M5x60	3x	4 Nm
GM4	Fillister-head screw M5x50	1x	4 Nm
GM6	Fillister-head screw M8x110	3x	15 Nm
GM6	Fillister-head screw M8x60	1x	15 Nm
GM8	Fillister-head screw M10x95	3x	20 Nm
GM8	Fillister-head screw M10x50	1x	20 Nm

Gear unit

Size	Type, size and length	Number	Tightening torque
GM2	Fillister-head screw M6x85	3x	7 Nm
GM4	Fillister-head screw M6x105	3x	7 Nm
GM6	Fillister-head screw M8x110	3x	18 Nm
GM8	Fillister-head screw M10x140	3x	25 Nm

Locking screw

Size	Type, size and length	Number	Tightening torque
GM2	Fillister-head screw M6x105	1x	7 Nm
GM4	Fillister-head screw M6x105	1x	7 Nm
GM6	Fillister-head screw M8x110	1x	10 Nm
GM8	Fillister-head screw M10x110	1x	10 Nm

Magnet body

Size	Type, size and length	Number	Tightening torque
GM2	Hexagon head screw M4x45	3x	3 Nm
GM4	Hexagon head screw M5x55	3x	6 Nm
GM6	Hexagon head screw M6x65	3x	10 Nm
GM8	Hexagon head screw M6x65	3x	10 Nm

Brake bearing shield

Size	Type, size and length	Number	Tightening torque
GM2	Fillister-head screw M5x20	3x	4 Nm
GM4	Fillister-head screw M5x20	4x	4 Nm
GM6	Fillister-head screw M8x25	4x	18 Nm
GM8	Fillister-head screw M10x30	4x	25 Nm

─ With the chain hoists GM2 and GM4, the fillister-head screw below on the left is also used to attach the tab washer for the bolt on the chain anchor point.

Only for twin-fall chain hoists

Bottom block

Size	Type, size and length	Number	Tightening torque
GM2	Fillister-head screw with self-locking nut M6x30	2x	10 Nm
GM4	Fillister-head screw with self-locking nut M8x35	2x	25 Nm
GM6	Fillister-head screw with self-locking nut M10x45	2x	36 Nm
GM8	Fillister-head screw with self-locking nut M12x75	2x	49 Nm

Only for single-fall chain hoists

Hook assembly

Size	Type, size and length	Number	Tightening torque
GM2	Fillister-head screw with self-locking nut M6x25	2x	10 Nm
GM4	Fillister-head screw with self-locking nut M6x25	2x	10 Nm
GM6	Fillister-head screw with self-locking nut M6x45	2x	12 Nm
GM8	Fillister-head screw with self-locking nut M8x50	2x	30 Nm

Only for GM6

Tab washer for bolt on chain anchor point

─ Fillister-head screw M5x10

─ 3 Nm

─ Only the chain hoist GM 6 has a separate fillister-head screw for the tab washer.

─ With the chain hoists GM2 and GM4, the fillister-head screw below on the left of the brake bearing shield is used to attach the tab washer.

─ With the chain hoist GM8, the chain anchor point is designed differently and requires no tab washer.