Bolt torque database

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Metric Bolt Torque Chart

Complete torque specifications for ISO metric bolts. Values shown in N·m for dry/plain steel (K = 0.20), coarse thread.

Size	4.6	4.8	5.6	5.8	6.8	8.8	9.8	10.9	12.9
M3	0.5	0.7	0.6	0.9	1.0	1.3	1.5	1.9	2.2
M4	1.2	1.6	1.5	2.0	2.3	3.1	3.4	4.4	5.1
M5	2.4	3.3	3.0	4.0	4.7	6.2	6.9	8.8	10.3
M6	4.1	5.6	5.1	6.9	8.0	10.5	11.8	15.0	17.6
M7	6.8	9.4	8.5	11.5	13.3	17.6	19.7	25.2	29.4
M8	9.9	13.6	12.3	16.7	19.3	25.5	28.6	36.5	42.6
M10	19.6	27.0	24.4	33.1	38.3	50.5	56.6	72.2	84.4
M12	34.1	47.0	42.5	57.6	66.7	88.0	98.6	125.9	147.1
M14	54.5	75.2	67.9	92.1	106.7	140.6	157.6	201.2	235.2
M16	84.6	116.6	105.3	142.9	165.4	218.1	244.4	312.1	364.7
M18	116.9	161.1	145.5	197.5	228.7	301.4	—	431.3	504.1
M20	165.2	227.7	205.6	279.1	323.1	425.9	—	609.5	712.3
M22	225.3	310.4	280.3	380.5	440.5	580.7	—	831.0	971.2
M24	285.5	393.4	355.3	482.2	558.4	736.0	—	1053.3	1230.9
M27	418.6	576.8	521.0	707.0	818.7	1079.2	—	1544.3	1804.8
M30	567.6	782.0	706.3	958.6	1110.0	1463.1	—	2093.8	2447.0
M33	772.4	1064.3	961.3	1304.6	1510.6	1991.2	—	2849.5	3330.1
M36	992.3	1367.2	1234.9	1675.9	1940.5	2558.0	—	3660.5	4278.0
M39	1284.7	1770.0	1598.7	2169.6	2512.2	3311.6	—	4739.0	5538.3
M42	1588.9	2189.1	1977.3	2683.4	3107.1	4095.8	—	5861.2	6849.8
M45	1983.6	2733.0	2468.5	3350.1	3879.1	5113.3	—	7317.4	8551.6
M48	2386.6	3288.2	2970.0	4030.6	4667.1	6152.0	—	8803.8	10288.8
M52	3084.8	4250.2	3838.9	5209.9	6032.5	7952.0	—	11379.5	13299.0
M56	3836.7	5286.1	4774.6	6479.8	7502.9	9890.2	—	14153.2	16540.4
M64	5780.2	7963.8	7193.1	9762.0	11303.4	14900.0	—	21322.4	24918.9

All values in N·m · Dry/plain steel · Coarse thread · Click any value for full details including all surface conditions