Tightening Torques - ABB TruFit 50kVA Installation Manual

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5.2 Tightening torques

Recommended tightening torque for all nuts and bolts is listed in the table below. As applicable, torque seal has
been utilized to indicate bolt torqueing.
Table 5-1: Recommended tightening torque
Thread
All internal bolts are SAE Grade 5.
Note bolt head markings above to distinguish between grades.
All internal machine screws are Grade 2.
Size
Inch
1/4
5/16
3/8
1/2
SAE Grade 5
120,000 psi
Medium Carbon Heat T.
Lb-ft
6
11
20
48
®
TruFit
Power Distribution Unit│94-1100-00002873 A0 EN 33/34
Installation Guide
N-M
8
15
27
65

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