B
B
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Hardware Torque Chart SAE Grade 8 and 9
Size
Basic
Major Dia.
Stress
Area H-28
SAE Grade 8 Assembly Torque
SAE Grade 9 Assembly Torque
Clamp Load
(lbs)
Dry
(in-lb)
Lubed
(in-lb)
Clamp Load
(lbs)
Dry
(in-lb)
Lubed
(in-lb)
4-10
.1120
.00604
540
12
9
--
--
--
4-18
.1120
.00661
600
13
10
--
--
--
6-32
.1380
.00909
820
23
17
--
--
--
6-40
.1380
.01015
920
25
19
--
--
--
8-32
.1640
.01400
1260
41
31
--
--
--
8-36
.1640
.01474
1320
43
32
--
--
--
10-24
.1900
.01750
1580
60
45
--
--
--
10-32
.1900
.02000
1800
68
51
--
--
--
1/4-20
.25000
.0318
2850
12
(ft-lb)
9
(ft-lb)
3450
11
(ft-lb)
--
1/4-28
.2500
.0364
3250
14
10
3950
13
--
5/16-18
.3125
.0524
4700
25
18
5700
21
--
5/16-24
.3125
.0580
5200
25
20
6300
23
--
3/8-16
.3750
.0775
7000
45
35
8450
33
--
3/8-24
.3750
.0878
7900
50
35
9550
38
--
7/16-14
.4375
.1063
9550
70
55
11550
60
--
7/16-20
.4375
.1187
10650
80
60
12900
65
--
1/2-13
.5000
.1419
12750
110
80
15450
95
--
1/2-20
.500
.1599
14375
120
90
17400
105
--
9/16-12
.5625
.1820
16375
150
10
19800
140
--
9/16-18
.5625
.2030
18250
170
130
22100
150
--
5/8-11
.6250
.2260
20350
220
170
24550
185
--
5/8-18
.6250
.2560
23000
240
180
27800
205
--
3/4-10
.7500
.3340
30100
380
280
36350
290
--