Material — High Grade Alloy Steel. Hardness — Rc 33-40. Tensile Stress — 1000 M Pa. Shear Stress — 600 M Pa. 0.2 degree Yield Stress — 900 M Pa. Sizes M5 and larger are stamped U 10.9.

All dimensions in millimeters.
Torque calcuated to induce 620 M Pa
in the screw threads.

Dimensions								Recommended Seating Torque
Nom		A	B	F	H	T	W			Cadmium
Thread						Min		Plain		Plated
Size	Pitch	Max	Max	Min	Max	(note 6)	Nom	N - m	inch-lbs	N - m	inch-lbs
M4	0.7	7	4	1.48	2.8	14	3	4.5	40	4.0	35
M5	0.8	8.5	5	1.85	3.5	16	4	8.5	75	8.0	70
M6	1.0	10	6	2.09	4.0	18	5	14.5	130	13.5	120
M8	1.25	13	8	2.48	5.0	22	6	35	310	33	290
M10	1.5	16	10	3.36	6.5	26	8	70	620	65	575
M12	1.75	18	12	4.26	8.0	30	10	120	1060	110	975
M16	2.0	24	16	4.76	10.0	38	12	300	2650	280	2475
M20	2.5	30	20	6.07	12.5	46	14	575	5100	540	4775