Dimensions for DIN 7990 Hexagon head bolts for steel structures

Thread d	p	b	c	da	ds			dw	e	k			k	r	s
			max	max	nominal	min	max	min	min	nominal	min	max	min	min	nominal=max	min
M12	1.75	17.75	0.6	14.7	12	11.3	12.7	17.2	20.88	8	7.55	8.45	5.28	0.6	19	18.48
M16	2	21	0.8	18.7	16	15.3	16.7	22	26.17	10	9.25	10.75	6.47	0.6	24	23.16
M20	2.5	23.5	0.8	24.4	20	19.16	20.84	27.7	32.95	13	12.1	13.9	8.47	0.8	30	29.16
M22	2.5	25.5	0.8	26.4	22	21.16	22.84	29.5	35.03	14	13.1	14.9	9.17	0.8	32	31
M24	3	26	0.8	28.4	24	23.16	24.84	33.2	39.55	15	14.1	18.9	9.87	0.8	36	35
M27	3	29	0.8	32.4	27	26.16	27.84	0.8	45.2	17	16.1	17.9	11.27	1	41	40
M30	3.5	30.5	0.8	35.4	30	29.16	27.84	42.7	50.85	19	17.95	20.05	12.56	1	46	45