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Hardware Torque Specifications
Use the torque values listed in the following Hardware Torque Charts when tightening hardware (excluding: locknuts and self-
tapping, thread-forming and sheet metal screws) unless specified otherwise. All torque values are in in-lb or ft-lb as indicated.
Hardware Torque Chart - SAE Grade 2 and 5
Size
Basic
Major Dia.
Stress
Area H-28
SAE Grade 2 Assembly Torque
SAE Grade 5 Assembly Torque
Clamp Load
(lbs)
Dry
(in-lb)
Lubed
(in-lb)
Clamp Load
(lbs)
Dry
(in-lb)
Lubed
(in-lb)
4-10
.1120
.00604
250
5
4
380
8
6
4-18
.1120
.00661
275
6
5
420
9
7
6-32
.1380
.00909
375
10
8
580
16
12
6-40
.1380
.01015
420
12 9
610
18
13
8-32
.1640
.01400
580
19
14
900
30
22
8-36
.1640
.01474
610
20
15
940
31
23
10-24
.1900
.01750
725
27
21
1120
43
32
10-32
.1900
.02000
825
31
23
1285
49
36
1/4-20
.25000
.0318
1320
66
50
2000
8
(ft-lb)
75
1/4-28
.2500
.0364
1500
76
56
2300
10
86
5/16-18
.3125
.0524
2160
11
(ft-lb)
8
(ft-lb)
3350
17
13
(ft-lb)
5/16-24
.3125
.0580
2400
12
9
3700
19
14
3/8-16
.3750
.0775
3200
20
15
4950
30
23
3/8-24
.3750
.0878
3620
23
17
5600
36
25
7/16-14
.4375
.1063
4390
32
24
6800
50
35
7/16-20
.4375
.1187
4900
36
27
7600
55
40
1/2-13
.5000
.1419
5850
50
35
9000
75 55
1/2-20
.500
.1599
6600
55
40
10250
90
65
9/16-12
.5625
.1820
7500
70
55
11600
110
80
9/16-18
.5625
.2030
8400
80
60
13000
120
90
