Dimensions for DIN 186 T-Head bolts with square neck Head

Thread d	p	b		ds			e	k			n			m			r1	r2	Type B
			auxiliary size	nom.	max	min	min	nom. size	max	min	nom.	max	min	nom.	max	min	approx.	approx.	ls min	lg max
M6	1	18	-	6	6.48	5.52	6.88	4.5	4.9	4.1	6	6.6	5.4	16	16.9	15.1	0.5	0.9	5	10
M8	1.25	22	-	8	8.58	7.42	9.24	5.5	5.9	5.1	8	8.75	7.25	18	18.9	17.1	0.5	1.2	6.75	13
M10	1.5	26	-	10	10.58	9.42	11.81	7	7.5	6.5	10	10.75	9.25	21	22	20	0.5	1.5	8.5	16
M12	1.75	30	-	12	12.7	11.3	14.17	8	8.75	7.25	12	12.9	11.1	26	27	25	1	1.8	10.25	19
M16	2	38	44	16	16.7	15.3	19.32	10.5	11.4	9.6	16	16.9	15.1	30	31	29	1	2.4	15	25
M20	2.5	46	52	20	20.84	19.16	24.33	13	13.9	12.1	20	21	19	36	37.25	34.75	1	3	18.5	31
M24	3	54	60	24	2.84	23.16	29.48	15	15.9	14.1	24	25	23	43	44.25	41.75	1.6	3.6	22	37
M30	3.5	66	72	30	30.84	29.16	37.2	19	20	18	30	31	29	54	55.5	52.5	1.6	4.5	25.5	43
M36	4	78	84	36	37	35	44.57	23	24	22	36	37.25	34.75	66	67.5	64.5	2	5.4	35	55
M42	4.5	-	96	42	43	41	52.29	26	27	25	42	43.25	40.75	80	81.5	78.5	2	6.3	41.5	54
M48	5	-	108	48	49	47	60	30	31	29	48	49.25	46.75	88	89.75	86.25	2	7.2	47	72