Dover HEIL DuraPack Python - Standard Torque Data for Nuts and Bolts; Standard Torque Data for Nuts and Bolts Table

Issued July 2024
General Information
Copyright 2024, The Heil Co.
Printed in the U.S.A.
General Information
18
STANDARD TORQUE DATA FOR NUTS AND BOLTS
The following recommended torque data is for use as a general guideline. Recommended torque, in foot pounds, for all
Standard Application nuts and bolts provided in the following table.
NOTICE
Torque specifications on a drawing override torque values in the Standard Torque Data for Nuts and Bolts Table.
All thread surfaces are clean and lubricated with SAE-30 engine oil. See notice above.
Joints are rigid, that is no gaskets or compressible materials are used
When re-using nuts or bolts use minimum torque values
STANDARD TORQUE DATA FOR NUTS AND BOLTS TABLE
Bolt Size
(D)
Nut Type
(STD/Lock)
Thread
Turns per
Inch
(p)
Grade
Heil Plain Dry
Condition
Torque Value
(ft-lbs)
Heil Zinc
Plated
Fastener
Torque
Value
(ft-lbs)
Heil Lubricated
Fastener
Torque Value
(ft-lbs)
Heil Deformed
Lock Nut
Torque Value
(ft-lbs)
1/4
STD
20
5
9
8
6
0.25
8
13
12
8
28
5
10
9
7
8
15
13
10
Lock
20
5
6
8
8
28
5
7
8
10
5/16
STD
18
5
19
17
12
.3125
8
27
24
17
24
5
21
19
14
8
29
27
19
Lock
18
5
12
8
17
24
5
14
8
19
3/8
STD
16
5
33
30
22
.375
8
47
42
31
24
5
38
34
25
8
54
48
35