Castle Nuts

Description:

Castle nuts from ITA Fasteners come with pre-drilled holes through which cotter pins can be inserted to hold the nuts securely in place. This gives the nuts the ability to withstand constant vibrations and allows them to stay in place during small movements. As these nuts are pre-drilled, they can be used without a pilot hole. These nuts are slotted, allowing it to be installed and removed using screwdrivers. It is available in stainless steel, carbon steel, and alloy steel to bear more wear and tear while also making it more corrosion resistant.

Their structural uniqueness allows them to be used in mechanical and automotive applications where positive locking is required, like holding a wheel bearing in place. It is also used as a safety nut for other component designing applications. These screws are characterised by the protrusions extending from their bodies, which make it look like a castle’s top - hence the name castle nuts.

Dimensional Standards:

DIN 935

Size range:

Metric: Nil
Inches: Nil

Castle Nuts Dimensions

DIN 935 - Hexagon slotted castle nuts

Equivalent norms: ISO 7035; CSN 21411; PN 82148; UNI 5593;

Legend:
s - size of the hexagon
m - height of the nut
d - the nominal diameter of the thread
h - height of the nut
n - groove width
de - diameter of the crown
Makings:
Steel: 8,10
Stainless: A2,A4
Plastic: -
Non Ferrous: -
Thread: 6H
Notes: -
Table according to DIN 935:
dimensions in mm

Thread d		M4	M5	M6	(M7)	M8	M10		M12		(M14)		M16	(M18)
				-	-	-	-	M8x1	M10x1		M12x1,5		(M14x1,5)		M16x1,5	(M18x1,5)
				-	-	-	-	-	M10x1,25		M12x1,25		-		-	(M18x2)
P		0,7	0,8	1	1	1,25	1,5		1,75		2		2	2,5
da	min.	4	5	6	7	8	10		12		14		16	18
da	max.	4,6	5,75	6,75	7,75	8,75	10,8		13		15,1		17,3	19,5
de	max.	-	-	-	-	-	-		16	17	18	19	22	25
de	min.	-	-	-	-	-	-		15,57	16,57	17,57	18,48	21,48	24,3
dw	min.	5,8	6,8	8,8	9,5	11,3	14,3	15,3	16,2	17,2	19,2	20,2	22,2	24,8
e	min.	7,66	8,79	11,05	12,12	14,38	17,77	18,9	20,03	21,1	23,35	24,49	26,75	29,56
m	nominal=max.	5	6	7,5	8	9,5	12		15		16		19	21
m	min.	4,7	5,7	7,14	7,64	9,14	11,57		14,57		15,57		18,48	20,16
m'	min.	2,3	3	3,8	4,2	4,9	6,1		7,7		8,2		9,8	11,2
n	min.	1,2	1,4	2	2	2,5	2,8		3,5		3,5		4,5	4,5
n	max.	1,45	1,65	2,25	2,25	2,75	3,05		3,8		3,8		4,8	4,8
s	nominal=max.	7	8	10	11	13	16	17	18	19	21	22	24	27
s	min.	6,78	7,78	9,78	10,73	12,73	15,73	16,73	17,73	18,67	20,67	21,67	23,67	26,16
w	min.	2,9	3,7	4,7	5,2	6,14	7,64		9,64		10,57		12,57	14,57
w	max.	3,2	4	5	5,5	6,5	8		10		11		13	15
Split pin as in DIN 94		1x10	1,2x12	1,6x14	1,6x14	2x16	2,5x20		3,2x22		3,2x25		4x28	4x32


Thread d			M20	(M22)		M24	(M27)	M30	(M33)	M36	(M39)	M42	(M45)
			M20x2	(M22x1,5)		M24x2	(M27x2)	M30x2	(M33x2)	M36x3	(M39x3)	M42x3	(M45x3)
			M20x1,5	M22x2)		-	-	-	-	-	-	-	-
P		2,5	2,5		3	3	3,5	3,5	4	4	4,5	4,5
da	min.	20	22		24	27	30	33	36	39	42	45
da	max.	21,6	23,8		25,9	29,2	32,4	35,6	38,9	42,1	45,4	48,6
de	max.	28	30	32	34	38	42	46	50	55	58	62
de	min.	27,3	29,3	31	33	37	41	45	49	53,8	56,8	60,8
dw	min.	27,7	29,5	31,3	33,2	38	42,7	46,6	51,1	55,9	60,6	64,7
e	min.	32,95	35,03	37,29	39,55	45,2	50,85	55,37	60,79	66,44	71,3	76,95
m	nominal=max.	22	26		27	30	33	35	38	40	46	48
m	min.	21,16	25,16		26,16	29,16	32	34	37	39	45	47
m'	min.	11,9	13,5		14,2	16,6	18,2	19,8	21,9	23,5	25,9	27,5
n	min.	4,5	5,5		5,5	5,5	7	7	7	7	9	9
n	max.	4,8	5,8		5,8	5,8	7,36	7,36	7,36	7,36	9,36	9,36
s	nominal=max.	30	32	34	36	41	46	50	55	60	65	70
s	min.	29,16	31	33	35	40	45	49	53,8	58,8	63,1	68,1
w	min.	15,57	17,57		18,48	21,48	23,48	25,48	28,48	30,28	33,38	35,38
w	max.	16	18		19	22	24	26	29	31	34	36
Split pin as in DIN 94		4,36	5x36		5x40	5x45	6,3x50	6,3x56	6,3x63	6,3x71	8x71	8x80


Thread d		M48	(M52)	M56	(M60)	M64	(M68)	M72x6	(M76x6)	M80x6	(M85x6)	M90x6	M100x6
		M48x3	(M52x3)	M56x4	(M60x4)	M64x4	(M68x4)	M72x4	(M76x4)	M80x4	(M85x4)	M90x4	M100x4
P		5	5	5,5	5,5	6	6	-	-	-	-	-	-
da	min.	48	52	56	60	64	68	72	76	80	85	90	100
da	max.	51,8	56,2	61	64,8	69,1	73,4	77,8	82,1	86,4	91,8	97,2	108
de	max.	65	70	75	80	85	90	95	100	105	110	120	130
de	min.	63,8	68,8	73,8	78,8	83,6	88,6	93,6	98,6	103,6	108,6	118,6	128,4
dw	min.	69,4	74,2	78,7	83,4	88,2	92,9	97,7	102,4	107,2	111,9	121,1	135,4
e	min.	82,6	88,25	93,56	99,21	104,86	110,51	116,16	121,81	127,46	133,11	144,08	161,02
m	nominal=max.	50	54	57	63	66	69	73	76	79	88	92	100
m	min.	49	52,8	55,8	61,8	64,8	67,8	71,8	74,8	77,8	86,6	90,6	98,6
m'	min.	29,1	32,3	34,7	37,1	39,3	41,7	44,9	47,3	49,7	52,9	56,1	62,5
n	min.	9	9	9	11	11	11	11	11	11	14	14	14
n	max.	9,36	9,36	9,36	11,43	11,43	11,43	11,43	11,43	11,43	14,43	14,43	14,43
s	nominal=max.	75	80	85	90	95	100	105	110	115	120	130	145
s	min.	73,1	78,1	82,8	87,8	92,8	97,8	102,8	107,8	112,8	117,8	127,5	142,5
w	min.	37,38	41,38	44,38	47,38	50,26	53,26	57,26	60,26	63,26	67,26	71,26	79,26
w	max.	38	42	45	48	51	54	58	61	64	68	72	80
Split pin as in DIN 94		8x80	8x90	8x100	10x100	10x100	10x112	10x112	10x125	10x140	13x140	13x140	13x160

Metric Coarse Thin Slotted and Castle Hexagon Nut Class-4 DIN937

D	s	e	m	w
M6	10.0000	11.0500	6.0000	3.5000
M7	11.0000	12.1200	7.0000	4.0000
M8	13.0000	14.3800	8.0000	4.5000
M10	17.0000	18.9000	9.0000	5.0000
M12	19.0000	20.1000	10.0000	6.0000
M14	22.0000	24.4900	11.0000	7.0000
M16	24.0000	26.7500	12.0000	7.0000
M18	27.0000	29.5600	13.0000	8.0000
M20	30.0000	32.9500	13.0000	8.0000
M22	32.0000	35.0500	15.0000	9.0000
M24	36.0000	39.5500	15.0000	9.0000
M27	41.0000	45.2000	17.0000	11.0000
M30	46.0000	50.8500	18.0000	11.0000
M33	50.0000	55.3700	20.0000	13.0000
M36	55.0000	60.7900	20.0000	13.0000
M39	60.0000	66.9600	22.0000	13.0000
M42	65.0000	72.6100	23.0000	14.0000
M45	70.0000	78.2600	25.0000	16.0000
M48	75.0000	83.9100	25.0000	16.0000
M52	80.0000	89.5600	27.0000	18.0000

BSW Whiteworth Slotted Hexagon Nut Steel BS 1083

d	A max	A min	C max	G max	G min	H max	H min	M max	M min	N approx.
1/4"	0.445	0.438	0.510	0.260	0.250	0.170	0.160	0.100	0.090	0.090
5/16"	0.525	0.518	0.610	0.280	0.270	0.190	0.180	0.100	0.090	0.090
3/8"	0.600	0.592	0.690	0.312	0.302	0.222	0.212	0.100	0.090	0.090
7/16"	0.710	0.702	0.820	0.375	0.365	0.235	0.225	0.135	0.125	0.140
1/2"	0.820	0.812	0.950	0.437	0.427	0.297	0.287	0.135	0.125	0.140
9/16"	0.920	0.912	1.060	0.500	0.490	0.313	0.303	0.175	0.165	0.187
5/8"	1.01	1.000	1.170	0.562	0.552	0.375	0.365	0.175	0.165	0.187
3/4"	1.200	1.190	1.390	0.687	0.677	0.453	0.443	0.218	0.208	0.234
7/8"	1.300	1.288	1.500	0.750	0.740	0.516	0.506	0.218	0.208	0.234
1"	1.480	1.468	1.710	0.875	0.865	0.595	0.585	0.260	0.250	0.280
1.1/8"	1.670	1.640	1.930	1.000	0.990	0.720	0.710	0.260	0.250	0.280
1.1/4"	1.860	1.815	2.150	1.125	1.105	0.797	0.777	0.300	0.290	0.328
1.3/8"	2.050	2.005	2.370	1.250	1.230	0.922	0.902	0.300	0.290	0.328
1.1/2"	2.220	2.175	2.560	1.375	1.355	1.047	1.027	0.300	0.290	0.328
1.3/4"	2.580	2.520	2.980	1.625	1.605	1.250	1.230	0.343	0.333	0.375
2"	2.760	2.700	3.190	1.750	1.730	1.282	1.262	0.426	0.416	0.468