Lucent Lineage
®
2000 ECS Battery Plant H569-408
Issue 2 July 1996
Installation 3 - 5
Table 3-B: Torque and Minimum Yield Strength for
Mechanical Connections (Using Hex Head Cap Screws
Cap Screw
Diameter
Grade 2
Minimum Yield
Strength (PSI)
Torque (Ft.-Lb.)
UNRC
1/4
3/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/ 8
1-1/4
1-38
1-1/2
57,000
57,000
57,000
57,000
57,000
57,000
57,000
57,000
36,000
36,000
36,000
36,000
36,000
36,000
5
12
22
35
54
77
107
190
193
290
410
580
760
1010