Yield stresses of metric coarse bolts/kN (divide by 10 for tonnes, by 4.5 for kilopounds)

Bolt Size	Grade 4.6	Grade 4.8	Grade 5.8	Grade 8.8	Grade 9.8	Grade 10.9	Grade 12.9
M1.6	0.32	0.43	0.5	0.8	0.9	1.14	1.4
M2	0.52	0.7	0.82	1.3	1.5	1.9	2.3
M2.5	0.85	1.2	1.3	2.2	2.4	3.0	3.7
M3	1.3	1.7	2.0	3.2	3.6	4.5	5.5
M3.5	1.7	2.3	2.7	4.3	4.8	6.1	7.5
M4	2.6	3.5	4.1	6.5	7.3	9.2	11
M5	3.6	4.8	5.6	9.0	10	13	16
M6	5	6.8	7.9	13	14	18	22
M8	9.2	12	14	23	26	33	40
M10	15	20	23	37	41	52	64
M12	21	29	33	54	60	75	93
M14	29	39	45	73	82	100	130
M16	39	53	62	100	110	140	170
M20	61	83	97	160	170	220	270
M24	88	120	140	220	250	320	390
M30	140	190	220	360	400	500	620
M36	200	280	320	520	580	730	900
M42	280	380	440	710	800	1000	1200
M48	370	500	580	930	1000	1300	1600
M56	510	690	800	1300	1400	1800	2200
M64	670	911	1100	1700	1900	2400	2900
M72	870	1200	1400	2200	2500	3100	3800
M80	1100	1400	1700	2800	3100	3900	4800