Torque Values Stainless Steel Bolt Table Chart

ANSI Hardware Design Guide
Design Torque and Force Calculations

Recommended Bolt Torque Values for Stainless Steel and Nonferrous Fasteners (inch series).

The following torque values are suggested maximums based upon actual lab testing on clean and dry or near dry fasteners. For other friction conditions, significant modifications may be required.

Values though 7/16-inch diameter are stated in inch-pounds: ½-inch and over are stated in foot-pounds.

Bolt Size
18-8 Stainless Steel
Torque in-lbs
316 Stainless Steel
Torque in-lbs
Silicon Bronze
in-lbs
Monel
in-lbs
Brass
in-lbs
2024-T4 Aluminum
in-lbs
4-40
5.2
5.5
4.8
5.3
4.3
2.9
4-48
6.6
6.9
6.1
6.7
5.4
3.6
5-40
7.7
8.1
7.1
7.8
6.3
4.2
5-44
9.4
9.8
8.7
9.6
7.7
5.1
6-32
9.6
10.1
8.9
9.8
7.9
5.3
6-40
12.1
12.7
11.2
12.3
9.9
6.6
8-32
19.8
20.7
18.4
20.2
16.2
10.8
8-36
22
23
20.4
22.4
18.0
12.0
10-24
22.8
23.8
21.2
25.9
18.6
13.8
10-32
31.7
33.1
29.3
34.9
25.9
19.2
1/4-20
75.2
78.8
68.8
85.3
61.5
45.6
1/4-28
94
99
87
106
77
57
5/16-18
132
138
123
149
107
80
5/16-24
142
147
131
160
116
86
3/8-16
236
247
219
266
192
143
3/8-24
259
271
240
294
212
157
7/16-14
376
393
349
427
317
228
7/16-20
400
418
371
451
327
242
Bolt Size
18-8 Stainless Steel
Torque ft-lbs
316 Stainless Steel
Torque ft-lbs
Silicon Bronze
ft-lbs
Monel
ft-lbs
Brass
ft-lbs
2024-T4 Aluminum
ft-lbs
1/2-13
43
45
40
48.7
35.2
26
1/2-20
45
47
42
51
37
27
9/16-12
56
59
53
65
47
34
9/16-18
62
65
58
71
51
38
5/8-11
92
96
86
111
76
60
5/8-18
103
108
96
123
85
67
3/4-10
127
131
118
153
104
82
3/4-16
124
129
115
149
102
80
7/8-9
194
202
178
231
159
124
7/8-14
193
201
177
230
158
124
1 - 8
286
299
265
344
235
184
1 - 14
259
270
240
311
212
166

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