DIN 7991

UNI 5733 Hexagon socket countersunk head cap screws Dimensions

Thread d	p	a	b			c	dk		da	ds		e	k	r	s			t
Thread d	p	2° 0	l?125mm	125<l?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

Diameter	M3	M4	M5	M6	M8	M10	M12	M16	M20	M24
Length	M3	M4	M5	M6	M8	M10	M12	M16	M20	M24
8	0.47	0.92	1.60	2.35
10	0.56	1.07	1.85	2.70	5.47
12	0.65	1.23	2.10	3.05	6.10	10.1
16	0.83	1.53	2.59	3.76	7.35	12.1
20	1.00	1.84	3.09	4.46	8.60	14.1	21.2
25	1.35	2.23	3.71	5.34	10.2	16.6	24.8
30	1.63	2.9	4.33	6.22	11.7	19.1	28.5	51.8
35		3.4	5.43	7.10	13.3	21.6	32.1	58.4	91.4
40		3.9	6.20	8.83	14.8	24.1	35.7	65.1	102
50			7.74	11.00	19.9	30.1	43.0	78.4	123	179
60					24.8	35.7	54.0	91.7	143	209
70						41.2	62.9	111	164	239
80								127	200	269
90								143	226	299
100									253	340

Weights are in kilograms per 1,000 pieces unless otherwise specified. All weights are approximations and strictly informative.