This product is regulated by the following standards:

Technical data

DIN 937
UNI 5594

Standard DIN 937

Hexagon thin slotted and castle nuts

Dimensions in mm - source DIN 937 Withdrawn
Publication date 12- 1983 Supersedes DIN 937: 12 -1978
d thread size	P	ds max	m max	w max	s nom	e min	n min	n max
M 6	1	-	6	3.5	10	11.05	2	2.25
M 7	1	-	7	4	11	12.12	2	2.25
M 8	1.25	-	8	4.5	13	14.38	2.5	2.75
M 10	1.5	-	9	5	17	18.9	2.8	3.05
M 12	1.75	17	10	6	19	20.1	3.5	3.8
M 14	2	19	11	7	22	24.49	3.5	3.8
M 16	2	22	12	7	24	26.75	4.5	4.8
M 18	2.5	25	13	8	27	29.56	4.5	4.8
M 20	2.5	28	13	8	30	32.95	4.5	4.8
M 22	2.5	30	15	9	32	35.03	5.5	5.8
M 24	3	34	15	9	36	39.55	5.5	5.8
M 27	3	38	17	11	41	45.2	5.5	5.8
M 30	3.5	42	18	11	46	50.85	7	7.36
M 33	3.5	46	20	13	50	55.37	7	7.36
M 36	4	50	20	13	55	60.79	7	7.36
M 39	4	55	22	13	60	66.44	7	7.36
M 42	4.5	58	23	14	65	71.3	9	9.36
M 45	4.5	62	25	16	70	76.95	9	9.36
M 48	5	65	25	16	75	82.6	9	9.36
M 52	5	70	27	18	80	88.25	9	9.36

Standard UNI 5594

Hexagon slotted and castle low nuts. Iso metric coarse and fine thread. Product grade A.

Dimensions in mm - source UNI 5594
Publication date: 11 - 1976
d thread size	P	ds	m = nom	w max	s nom=max	n nom	≈ weigth, in kg x1000 pcs, (ρ=7,85 kg/dm3) coarse thread	≈ weigth, in kg x1000 pcs, (ρ=7,85 kg/dm3) fine thread
M 6	1	/	6.5	4	10	2	2.67	/
M 7	1	/	6.5	4	11	2	3.12	/
M 8	1/1.25	/	8	5	13	2.50	6.13	6.03
M 10	1.25/1.5	/	10	5	17	2.80	12.89	12.72
M 12	1.25/1.75	17	12	7	19	3.50	17.50	17
M 14	1.5/2	19	13	8	22	3.50	20.30	19.6
M 16	1.5/2	22	14	8	24	4.50	26.2	25.5
M 18	1.5/2.5	25	15	9	27	4.50	37.2	35.7
M 20	1.5/2.5	28	15	9	30	4.50	47.5	45.4
M 22	1.5/2.5	30	18	10	32	5.50	59.5	56.6
M 24	2/3	34	18	10	36	5.50	79.9	76.9
M 27	2/3	38	20	12	41	5.50	118	114
M 30	2/3.5	42	21	12	46	7	150	145
M 33	2/3.5	46	23	14	50	7	201	193
M 36	3/4	50	23	14	55	7	246	239
M 39	3/4	55	25	16	60	7	335	329

Hexagon thin slotted and castle nuts

Dimensions in mm - source DIN 937
Publication date 12/1983 Supersedes DIN 937: 12/1978
d thread size	P	ds max	m max	w max	s nom	e min	n min	n max
M 6	1	-	6	3.5	10	11.05	2	2.25
M 7	1	-	7	4	11	12.12	2	2.25
M 8	1.25	-	8	4.5	13	14.38	2.5	2.75
M 10	1.5	-	9	5	17	18.9	2.8	3.05
M 12	1.75	17	10	6	19	20.1	3.5	3.8
M 14	2	19	11	7	22	24.49	3.5	3.8
M 16	2	22	12	7	24	26.75	4.5	4.8
M 18	2.5	25	13	8	27	29.56	4.5	4.8
M 20	2.5	28	13	8	30	32.95	4.5	4.8
M 22	2.5	30	15	9	32	35.03	5.5	5.8
M 24	3	34	15	9	36	39.55	5.5	5.8
M 27	3	38	17	11	41	45.2	5.5	5.8
M 30	3.5	42	18	11	46	50.85	7	7.36
M 33	3.5	46	20	13	50	55.37	7	7.36
M 36	4	50	20	13	55	60.79	7	7.36
M 39	4	55	22	13	60	66.44	7	7.36
M 42	4.5	58	23	14	65	71.3	9	9.36
M 45	4.5	62	25	16	70	76.95	9	9.36
M 48	5	65	25	16	75	82.6	9	9.36
M 52	5	70	27	18	80	88.25	9	9.36

Full list of Suppliers of Hexagon thin slotted and castle nuts

Italy

GIRARDELLO MARIO

Manufacturer of turned nuts, hexagon nuts, castle nuts, locking and special nuts

Germany

Lippische Eisenindustrie Gmbh

Manufacturer of standard nuts M10-M64, wheel nuts and slotted nuts

Italy

PISCETTA FRATELLI S.R.L.

Manufacturer of turned nuts and roll bearing lock nuts.

Sweden

Ramco Scandinavia AB

Manufacturer of flange nuts, weld nuts, hexagonal nuts, special and self locking nuts

Germany

BECO GmbH

Distributor of standard and special nuts

C. Adams & Sons Limited

Manufacturer and distributor of standard and special nuts, both in metric and imperial sizes

D.S. Fasteners

Distributor of nuts: hexagonal, self-locking, dome, welding and with flange

Taiwan

FASTENER JAMHER TAIWAN INC.

Manufacturer and export of special nuts

India

FRIENDS ENGG. WORKS

Manufacturer specialized in nuts: Dome Nuts, Flange Nuts, Hex Nuts, Lock Nuts, Nylock Nuts

India

Manufacturer specialized in different kinds of nuts: hex nuts, lock nuts, nylocknuts, dome nuts, slotted nuts, castle nuts, coupling nuts, weld nuts, collar nuts, antitheft nuts, pal nuts, spring nuts.

China