Screw Loads

The values here have been calculated with simple formula and should be used only as an estimated for the torque required.

	-	FASTENER SIZE
	-	M6	M8	M10	M12	M14	M16	M20	M22	M24	M30	M36
Pitch	mm	1.0	1.25	1.50	1.75	2.0	2.0	2.5	2.5	3.0	3.5	4.0
Stress Area	mm2	20.1	36.6	58	84.3	115	157	245	303	353	561	817
-	GRADE	-	-	-	-	-	-	-	-	-	-	-
Minimum Tensile Load (kN)	4,6	8,04	14,6	28,2	33,7	46	62,8	98	121	141	224	327
	8,8	16,1	29,2	46,4	67,4	92	125	203	252	293	466	678
	10,9	20,9	38,1	60,3	87,7	120	168	255	315	367	583	850
	12,9	24,5	44,6	70,8	103	140	192	299	370	431	684	997
Proof Loads (kN)	4,6	4,52	8,24	13	19	25,9	35,3	55,1	68,2	79,4	126	184
	8,8	11,6	21,2	33,7	48,9	66,7	91	147	182	212	337	490
	10,9	16,7	30,4	48,1	70	95,5	130	203	212	293	466	678
	12,9	19,5	35,5	56,3	81,8	112	152	238	294	342	544	792
Maximum Torque Nm	4,6	4,6104	11,2064	22,1	38,76	61,642	96,016	187,34	255,068	323,952	642,6	1126,08
	8,8	11,832	28,832	57,29	99,756	158,746	247,52	499,8	680,68	864,96	1718,7	2998,8
	10,9	17,034	41,344	81,77	142,8	227,29	353,6	690,2	792,88	1195,44	2376,6	4149,36
	12,9	19,89	48,28	95,71	166,872	266,56	413,44	809,2	1099,56	1395,36	2774,4	4847,04

Torque = K * F * d

Where:
k = 0.2 based on a friction coefficient of 0.15
d = nominal diameter
F = Maximum bolting tension (0.85 Proof Load)

All dimensions are in millimetres.

Note provided for information only, information has not been checked by an independent source, therefore if you use this information you do so at your risk.