DIN 985 Specifications – Hex Lock Nut

DIN 985

Hexagon lock nuts

DIAMETERS

Thread Size d			M3	M4	M5	M6
P	Pitch	Coarse thread	0.5	0.7	0.8	1
		Fine thread 1	/	/	/	/
		Fine thread 2	/	/	/	/
da	min		3	4	5	6
	max		3.45	4.6	5.75	6.75
dw	min		4.6	5.9	6.9	8.9
e	min		6.01	7.66	8.79	11.05
h	max=nominal size		4	5	5	6
	min		3.7	4.7	4.7	5.7
m	min		2.4	2.9	3.2	4
mw	min		1.65	2.2	2.75	3.3
s	max=nominal size		5.5	7	8	10
	min		5.32	6.78	7.78	9.78
per 1000 units≈kg			0.5	1	1.4	2.4

Thread Size d			M7	M8	M10
P	Pitch	Coarse thread	1	1.25	1.5
		Fine thread 1	/	1	1
		Fine thread 2	/	/	1.25
da	min		7	8	10
	max		7.75	8.75	10.8
dw	min		9.6	11.6	15.6
e	min		12.12	14.38	18.9
h	max=nominal size		7.5	8	10
	min		7.14	7.64	9.64
m	min		4.7	5.5	6.5
mw	min		3.85	4.4	5.5
s	max=nominal size		11	13	17
	min		10.73	12.73	16.73
per 1000 units≈kg			3	5.1	10.6

Thread Size d			M12	M14	M16
P	Pitch	Coarse thread	1.75	2	2
		Fine thread 1	1.5	1.5	1.5
		Fine thread 2	1.25	/	/
da	min		12	14	16
	max		13	15.1	17.3
dw	min		17.4	20.5	22.5
e	min		21.1	24.49	26.75
h	max=nominal size		12	14	16
	min		11.57	13.3	15.3
m	min		8	9.5	10.5
mw	min		6.6	7.7	8.8
s	max=nominal size		19	22	24
	min		18.67	21.67	23.67
per 1000 units≈kg			17.2	26	34

Thread Size d			M18	M20	M22
P	Pitch	Coarse thread	2.5	2.5	2.5
		Fine thread 1	2	2	2
		Fine thread 2	1.5	1.5	1.5
da	min		18	20	22
	max		19.5	21.6	23.7
dw	min		24.9	27.7	29.5
e	min		29.56	32.95	35.03
h	max=nominal size		18.5	20	22
	min		17.66	18.7	20.7
m	min		13	14	15
mw	min		9.9	11	12.2
s	max=nominal size		27	30	32
	min		26.16	29.16	31
per 1000 units≈kg			45	65	75

Thread Size d			M24	M27	M30
P	Pitch	Coarse thread	3	3	3.5
		Fine thread 1	2	2	2
		Fine thread 2	/	/	/
da	min		24	27	30
	max		25.9	29.1	32.4
dw	min		33.2	38	42.7
e	min		39.55	45.2	50.85
h	max=nominal size		24	27	30
	min		22.7	25.7	28.7
m	min		15	17	19
mw	min		13.2	14.8	16.5
s	max=nominal size		36	41	46
	min		35	40	45
per 1000 units≈kg			100	162	212

Thread Size d			M33	M36	M39
P	Pitch	Coarse thread	3.5	4	4
		Fine thread 1	2	3	3
		Fine thread 2	/	/	/
da	min		33	36	39
	max		35.6	38.9	42.1
dw	min		46.6	51.1	55.9
e	min		55.37	60.79	66.44
h	max=nominal size		33	36	39
	min		31.4	34.4	37.4
m	min		22	25	27
mw	min		18.2	19.8	21.5
s	max=nominal size		50	55	60
	min		49	53.8	58.8
per 1000 units≈kg			317	415	499

Thread Size d			M42	M45	M48
P	Pitch	Coarse thread	4.5	4.5	5
		Fine thread 1	3	3	3
		Fine thread 2	/	/	/
da	min		42	45	48
	max		45.4	48.6	51.8
dw	min		60.6	64.7	69.4
e	min		72.09	76.95	82.6
h	max=nominal size		42	45	48
	min		40.4	43.4	46.4
m	min		29	32	36
mw	min		23.1	24.8	26.5
s	max=nominal size		65	70	75
	min		63.8	68.1	73.1
per 1000 units≈kg			628	771	998

All information is strictly informative