44
RECOMMENDED BOLT TORQUE
Higher or lower torques for special applications will be specified such as the use of spanner nuts, nuts on shaft
ends, jam nuts and where distortion of parts or gaskets is critical.
Lubricated torque values based on use of SAE 30wt engine oil applied to threads and face of bolt or nut.
Dry
Lubed
Dry
Lubed
Dry
Lubed
Dry
Lubed
Torque (LB-FT)
Grade 5
Grade 8
1/4
20
28
5/16
3/8
18
24
16
24
7/16
1/2
9/16
5/8
8
6
12
9
17
13
24
18
45
35
70
50
23
31
50
35
80
110
80
150
110
110
55
75
150
115
210
160
14
20
13
20
12
18
11
18
265
200
Torque (LB-FT)
Grade 5
Grade 8
380
280
7/8
9
14
420
325
600
450
3/4
10
16
680
1 1/8
7
12
790
590
1290
970
1
8
14
640
7
12
1120
835
910
485
1460
1820
1360
1 3/8
6
12
1460
1095
2385
1790
1 1/4
3160
2370
Q
Bolt Dia.
Inches
Thds Per
Inch
Bolt Dia.
Inches
Thds Per
Inch
1 1/2
6
12
1940
Содержание Braden BP200
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