DIN 931 Hex Head Bolts with Partially Threaded

DIN 931 hexagonal head bolts are metric externally threaded fasteners with a hexagonal, chamfered head and a partially threaded shank. DIN 931 and DIN 933 (hexagonal head fully threaded bolts) are both commonly used German industrial standards. 51Fasteners offers these fasteners in a variety of materials and finishes, available in both metric and inch sizes. Click on the link to view related products: hex head bolts.

DIN 931 Dimensions

Equivalent standard: ISO 4014.

Table 1: Dimensions

(mm)	P	da max	ds max	ds min	e min	k max	k min	r min	s max	s min
M1.6	0.35	2.0	1.6	1.46	3.41	1.22	0.98	0.10	3.20	3.02
M2	0.40	2.6	2.0	1.86	4.32	1.52	1.28	0.10	4.00	3.82
M2.5	0.45	3.1	2.5	2.36	5.45	1.82	1.58	0.10	5.00	4.82
M3	0.50	3.6	3.0	2.86	6.01	2.12	1.88	0.10	5.50	5.32
M3.5	0.60	4.1	3.5	3.32	6.58	2.52	2.28	0.10	6.00	5.82
M4	0.70	4.7	4.0	3.82	7.66	2.92	2.68	0.20	7.00	6.78
M5	0.80	5.7	5.0	4.82	8.79	3.65	3.35	0.20	8.00	7.78
M6	1.00	6.8	6.0	5.82	11.05	4.15	3.85	0.25	10.00	9.78
M7	1.00	7.8	7.0	6.78	12.12	4.95	4.65	0.25	11.00	10.73
M8	1.25	9.2	8.0	7.78	14.38	5.45	5.15	0.40	13.00	12.73
M10	1.50	11.2	10.0	9.78	18.90	6.58	6.22	0.40	17.00	16.73
M12	1.75	13.7	12.0	11.73	21.10	7.68	7.32	0.60	19.00	18.67
M14	2.00	15.7	14.0	13.73	24.49	8.98	8.62	0.60	22.00	21.67
M16	2.00	17.7	16.0	15.73	26.75	10.18	9.82	0.60	24.00	23.67
M18	2.50	20.2	18.0	17.73	30.14	11.72	11.28	0.60	27.00	26.67
M20	2.50	22.4	20.0	19.67	33.53	12.72	12.28	0.80	30.00	29.67
M22	2.50	24.4	22.0	21.67	35.72	14.22	13.78	0.80	32.00	31.61
M24	3.00	26.4	24.0	23.67	39.98	15.22	14.78	0.80	36.00	35.38
M27	3.00	30.4	27.0	26.48	45.20	17.35	16.65	1.00	41.00	40.00
M30	3.50	33.4	30.0	29.48	50.85	19.12	18.28	1.00	46.00	45.00
M33	3.50	36.4	33.0	32.38	55.37	21.42	20.58	1.00	50.00	49.00
M36	4.00	39.4	36.0	35.38	60.79	22.92	22.08	1.00	55.00	53.80
M39	4.00	42.4	39.0	38.38	66.44	25.42	24.58	1.00	60.00	58.80

Table 2: Dimensions

(mm)	P	da max	ds max	ds min	e min	k min	k max	r min	s max	s min
M68	6	75	68	67.26	110.51	42.5	43.5	2.0	100	97.8
M72	6	79	72	71.26	116.16	44.5	45.5	2.0	105	102.8
M76	6	83	76	75.26	121.81	47.5	48.5	2.0	110	107.8
M80	6	87	88	79.26	127.46	49.5	50.5	2.0	115	112.8
M90	6	97	90	89.13	144.08	56.4	57.6	2.5	130	127.5
M100	6	107	100	99.13	161.02	62.4	63.6	2.5	145	142.5
M110	6	117	110	109.13	172.32	68.4	69.6	2.5	155	152.5
M125	6	132	125	124.00	200.57	78.4	79.6	2.5	180	177.5
M140	6	147	140	139.00	220.80	87.3	88.7	2.5	200	195.4
M160	8	167	160	159.00	254.70	99.3	100.7	2.5	230	225.4