14
PNEG-2145
21' Diameter Gamma Roof Assembly Instructions
3. Hardware Requirements
Bolt Torque Specifications
The specification torque table below will help the installer determine how tight a specific bolt must be.
A bolt that has been over tightened can be just as dangerous as one that has not been tightened enough.
IMPORTANT:
Bolts should not be tightened in excess of the torque specifications chart listed below.
Bolt
Minimum Torque
Minimum Torque
Sealing Joints
(Joints with
Sealing Washers)
Structural Joints
(Joints without
Sealing Washers)
Sealing Joints
(Joints with
Sealing Washers)
Structural Joints
(Joints without any
Sealing Washers)
ft./lbs.
N-m
ft./lbs.
N-m
ft./lbs.
N-m
ft./lbs.
N-m
5/16"-18 JS Grade 8 with Seal
20
27
-
-
25
34
-
-
3/8"-16 JS Grade 8 with Seal
30
41
-
-
35
47
-
-
7/16"-14 JS Grade 8 with Seal
50
68
-
-
60
60
-
-
3/8"-16 YDP Grade 8 Flanged
-
-
40
54
-
-
45
61
7/16"-14 YDP Grade 8 Flanged
-
-
65
88
-
-
72
97
1/2"-13 YDP Grade 8 Flanged
-
-
100
135
-
-
110
149
