Bolt	-	Nut	-	Washer	-	-
Size	P	T.	W.across Flats	T.	O.D.	I.D.
M10	1.5	10	20	2.0	30	10.5
M12	1.75	14	24	2.4	35	13
M14	2.0	14	28	2.4	41	15
M16	2.0	16	32	2.6	47	17
M18	2.5	18	36	2.6	52	19
M20	2.5	18	40	2.6	58	21
M22	2.5	22	44	3.0	64	23
M24	3.0	22	48	3.0	69	25
M27	3.0	22	54	3.0	78	28
M30	3.5	26	60	4.0	86	31
M36	4.0	30	72	4.0	103	37
M42	4.5	34	84	5.0	120	43