HARBEN 903-1315, Operation & Maintenance Manual

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5.3. General Torque Settings
Fastener
Nominal Dia
(mm)
TORQUE SETTING (Nm)
Carbon Steel Stainless Steel
Grade 8.8 Grade 10.9 Grade 12.9 Grade A2.5
Grade
A2.7
5 6 8 10 4 6
6 11 14 16 7 10
8 27 33 40 17 23
10 53 66 79 33 46
12 92 115 138 58 81
16 229 286 344 143 200
20 447 559 670 279 391
The above Torque settings are for lightly oiled threads. IMPORTANT! DO NOT USE for DRY
THREADS. ALL THREADS MUST BE LIGHTLY OILED, unless specified otherwise.
Where the nut material is softer than the bolt, this must be considered, and a lower torque
figure calculated. (Contact: Technical Dept).
The above Torque settings are to be used when no other specific torque is quoted. ALWAYS
CHECK if a specific torque figure is available.