EUROBLOC
SERVICE MANUAL FOR HOIST
212/212
This document and the information contained herein, is the exclusive property of Verlinde S.A.S. and represents a non-public, confidential and proprietary trade secret that
may not be reproduced, disclosed to third parties, altered or otherwise employed in any manner whatsoever without the express written consent of Verlinde S.A.S.
Copyright © (2013) Verlinde S.A.S. All rights reserved.
06/2015
9 APPENDIX: TIGHTENING TORQUES
The following tightening torques shall be applied on bolts in cases, where tightening of a bolt is not specified in any
way in the relevant drawing.
Tightening must be done using a tool or method, where the applied torque is measured and indicated.
See below screw joints, recommended tightening torques. Measurements are given in Nm. A friction coefficient
µ
=
0,14 is assumed in the calculations of the preceding tightening torques.
Tightening torque (Nm)
Size
Strength class 8.8
Strength class 10.9
Strength 12.9
M2
Hand tight (0.39)
Hand tight (0.55)
Hand tight (0.66)
M3
Hand tight (1.41)
Hand tight (1.98)
Hand tight (2.37)
M4
Hand tight (3.3)
Hand tight (4.8)
Hand tight (5.6)
M5
Hand tight (6.5)
Hand tight (9.5)
Hand tight (11.2)
M6
Hand tight (11.3)
Hand tight (16.5)
Hand tight (19.3)
M8
25
35
42
M10
49
69
83
M12
86
122
145
M14
136
190
230
M16
210
300
360
M18
290
410
495
M20
410
590
710
M22
560
790
950
M24
710
1000
1200
M27
1040
1460
1750
M30
1410
2000
2400
M33
1910
2700
3250
M36
2460
3500
4200
These torques are for
screws DIN912, DIN931, DIN933
nuts DIN934, DIN935, DIN982, DIN985, DIN98
Others shall be specified in drawings
Note: It is recommended that self-locking nuts (Nyloc nut) are always replaced when removed. Self locking nuts
can be reused no more than 5 times.
