DIN7991 Hexagon Socket Countersunk Head Cap Screws

Thread d	p	a	b			c	dk		da	ds		e	k	r	s			t
Thread d	p	2° 0	≤125mm	125≤200mm	l>200mm	approx.	nominal=max.	min.	max	nominal=max	min	min	max	min	nominal	min	max	max	min
M3	0.5	90°	12	-	-	0.2	6	5.7	3.6	3	2.86	2.3	1.7	0.1	2	2.02	2.1	1.2	0.95
M4	0.7	90°	14	-	-	0.3	8	7.64	4.7	4	3.82	2.87	2.3	0.2	2.5	2.52	2.6	1.8	1.5
M5	0.8	90	16	-	-	0.3	10	9.64	5.7	5	4.82	3.44	2.8	0.2	3	3.02	3.1	2.3	2.05
M6	1	90°	18	24	-	0.3	12	11..57	6.8	6	5.82	4.58	3.3	0.3	4	4.02	4.12	2.5	2.25
M8	1.25	90°	22	28	-	0.4	16	15.57	9.2	8	7.78	5.72	4.4	0.5	5	5.02	5.14	3.5	3.2
M10	1.5	90°	26	32	45	0.5	20	19.48	11.2	10	9.78	6.86	5.5	0.5	6	6.02	6.14	4.4	4.1
M12	1.75	90°	30	36	49	0.5	24	23.48	13.7	12	11.73	9.15	6.5	1	8	8.025	8.175	4.6	4.3
M14	2	90°	34	40	53	0.5	27	26.48	15.7	14	13.73	11.43	7	1	10	10.025	10.175	4.8	4.5
M16	2	90°	38	44	57	0.5	30	29.48	17.7	16	15.73	11.43	7.5	1	10	10.025	10.175	5.3	5
M18	2.5	90°	42	48	61	0.5	33	32.38	20.2	18	17.73	13.72	8	1	12	12.032	12.212	5.5	5.2
M20	2.5	90°	46	52	65	0.5	36	35.38	22.4	20	19.67	13.72	8.5	1	12	12.032	12.212	5.9	5.6
M22	2.5	60°	50	56	69	1	36	35.38	24.4	22	21.67	16	13.1	1	14	14.032	14.212	8.8	8.44
M24	3	60°	54	60	73	1	.39	38.38	26.4	24	23.67	16	14	1.6	14	14.032	14.212	10.3	9.87