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