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Tightening torques
Tightening torques for screws with UNF thread,
Unified Fine Thread
Screw dimension
1" - 12
1 1/8" - 12
1 1/4" - 12
1 3/8" - 12
1 1/2" - 12
μ
*
Coefficient of friction
tot. = 0,14
008 916 89
*
UNF Unified National Fine Thread Series, American
Tightening torques Nm
8.8
930
1350
1900
2600
3300
BOMAG
10.9
1300
1900
2700
3700
4600
1.4
12.9
1600
2300
3200
4400
5600
33
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