DIN 609 Hexagon Fit Bolt

DIN 609 is the German industrial standard for hexagonal head fit bolts. The bolts are classified as shank + partially threaded; shank length ≈ 1.3 × nominal diameter d. DIN 609 has a more defined requirement for the length of the bare shaft than DIN 931 (partially threaded bolts) and DIN 933 (fully threaded bolts). It is used where a shank partially matching the bore diameter is required to carry shear forces.

DIN 609 Hexagon Fit Bolt Dimensions

Equivalent standards: CSN 021111; PN 82342.

mm	P	ds max	ds min	e min	k max	k min	s max	r min	s min	r max
M8	1.25	9.010	9.001	14.38	5.45	5.15	13	0.40	12.73	0.55
M10	1.50	11.012	11.001	17.77	6.58	6.22	16	0.40	15.73	0.55
M12	1.75	13.012	13.001	19.85	7.79	7.21	18	0.60	17.57	0.75
M14	2.00	15.012	15.001	22.78	9.09	8.51	21	0.60	20.16	0.75
M16	2.00	17.012	17.001	26.17	10.29	9.71	24	0.60	23.16	0.75
M18	2.50	19.015	19.002	29.56	11.85	11.15	27	0.60	26.16	0.75
M20	2.50	21.015	21.002	32.95	12.85	12.15	30	0.80	29.16	0.95
M22	2.50	23.015	23.002	37.29	14.35	13.65	34	0.80	33.00	0.95
M24	3.00	25.015	25.002	39.55	15.35	14.65	36	0.80	35.00	0.95
M27	3.00	28.015	28.002	45.20	17.35	16.65	41	1.00	40.00	1.15
M30	3.50	32.018	32.002	50.85	19.42	18.58	46	1.00	45.00	1.15
M33	3.50	34.018	34.002	55.37	21.42	20.58	50	1.00	49.00	1.15
M36	4.00	38.018	38.002	60.79	22.42	21.58	55	1.00	53.80	1.15
M39	4.00	40.018	40.002	66.44	25.42	24.58	60	1.00	58.80	1.15
M42	4.50	44.018	44.002	71.30	26.42	25.58	65	1.00	63.10	1.15
M45	4.50	46.018	46.002	76.95	28.42	27.58	70	1.00	68.10	1.15
M48	5.00	50.018	50.002	82.60	30.42	29.58	75	1.00	73.10	1.15
M52	5.00	55.021	55.002	88.25	33.50	32.50	80	1.00	78.10	1.15