Matrix Telecom Inverter System
58
Copyright © 2008-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-68D February 2010
Standard Torque Settings
Use the following torque settings unless specific values are stated on the fastener or elsewhere.
For battery terminals use the torque values specified by the battery manufacturer.
Thread Size
ISO Coarse
Minimum - Maximum Torque
M2.5 0.3 - 0.4Nm (2.7 - 3.5 inch-pounds)
M3 0.5 - 0.6Nm (4.5 - 5.3 inch-pounds)
M4 1.1 - 1.3Nm (9.8 - 11.5 inch-pounds)
M5 2.3 - 2.7Nm (20.5 - 23.9 inch-pounds)
M6 3.9 - 4.5Nm (35 - 39 inch-pounds)
M8 9.5 - 11.1Nm (85 - 98 inch-pounds)
M10 18.7 - 21.9Nm (166 - 194 inch-pounds)
M12 32.8 - 38.4Nm (292 - 340 inch-pounds)
M16 81.5 - 95.1Nm (724 - 844 inch-pounds)
Notes:
1 Torque settings are for mild steel, brass and stainless steel.
2 Torque is based on 60% of yield stress of the material. Yield for the purposes of this chart is
240MPa.
3 Tolerance range is 60 - 70 % of yield.
4 When a bolt and nut is torqued use a spanner to prevent rotation.
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