EN 14399 Part 3: Basic bolt dimensions (HR Bolts)

Size (d)	M12	M16	M20	M22	M24	M27	M30	M36
Pitch	1.75	2	2.5	2.5	3	3	3.5	4
b (l <=125)	30	38	46	50	54	60	66	78
b (125< l <=200	–	44	52	56	60	66	72	84
b (l >200)	–	–	65	69	73	79	85	97
ds	11.30-12.70	15.30-16.70	19.16-20.84	21.16-22.84	23.16-24.84	26.16-27.84	29.16-30.84	35.00-37.00
e (min)	23.91	29.56	35.03	39.55	45.20	50.85	55.37	66.44
k (nom)	7.5	10	12.5	14	15	17	18.7	22.5
k	7.05-7.95	9.25-10.75	11.60-13.40	13.10-14.90	14.10-15.90	16.10-17.90	17.65-19.75	21.45-23.55
s	21.16-22	26.16-27	31.00-32	35.0-36	40.0-41	45.0-46	59.0-50	58.8-60

All dimensions in millimetres