Nuts

Nylock Nut Standard | Nylon Insert Lock Nuts | Nylock Nut Dimensions, Din 982 vs Din 985 | Nyloc Nut ISO Standard

NYLOCK NUT

Description:

Nylock nuts from ITA Fasteners have a nylon filled center which prevents the components from loosening. The nylon filling is machine threaded and acts as a lock to ensure that the fastening is secure. The usage of these nuts makes sure that the structural damage to the body is minimum despite repeated assembly and disassembly. There are two ways in which the nylon locks the nut. In the first method, it increases the friction between the nut and screw by forcing the bottom face of the screw threads against the top face of the nut threads. In the second way, a compressive force is exerted against the screw itself.

Using nylock nuts allows you to use it repeatedly without damaging the threads of screws, but it comes at the cost of damaging the nylon present in the nut. It is available in stainless steel, carbon steel, and alloy steel to bear more wear and tear while also making it more corrosion resistant. It can also lock out moisture due to the placement of nylon. This completely seals the bolt in place.

Dimensional Standards:

DIN 982 , DIN 985, ISO 7040, ISO 10511

Size range:

Metric: M6 to M72
Inches: 1/4” to 1-1/2”

Nylock Nuts Dimensions

DIN 982 - Prevailing torque nuts with nonmetalic insert

Equivalent norms: ISO 7040; CSN 21492; UNI 7473;

Legend:
s - size of the hexagon
d - the nominal diameter of the thread
h - height of the nut
m - hight of the nut part
Makings:
Steel: 5,6,8,10
Stainless: A2,A4
Plastic: -
Non Ferrous: -
Thread: 6H
Notes:
Table according to DIN 982:
dimensions in mm

Thread size d		M5	M6	M7	M8	M10	M12	M14	M16	M18	M20	M22	M24
		-	-	-	M8x1	M10x1	M12x1,5	M14x1,5	M16x1,5	M18x2	M20x2	M22x2	M24x2
		-	-	-	-	M10x1,25	M12x1,25	-	-	M18x1,5	M20x2	M22x2	-
P		0,8	1	1	1,25	1,5	1,75	2	2	2,5	2,5	2,5	3
da	min.	5	6	7	8	10	12	14	16	18	20	22	24
da	max.	5,75	6,75	7,75	8,75	10,8	13	15,1	17,3	19,5	21,6	23,7	25,9
dw	min.	6,9	8,9	9,6	11,6	15,6	17,4	20,5	22,5	24,9	27,7	29,5	33,2
e	min.	8,79	11,05	12,12	14,38	18,9	21,1	24,49	26,75	29,56	32,95	35,03	29,55
h	max. = nominal size	6,3	8	8,5	9,5	11,5	14	16	18	20	22	25	28
h	min.	6	7,7	8,2	9,14	11,14	13,64	15,3	17,3	19,16	20,7	23,7	26,7
m	min.	4,4	4,9	6,14	6,44	8,04	10,37	12,1	14,1	15,1	16,9	18,1	20,2
m´	min.	3,52	3,92	4,91	5,15	6,43	8,3	9,68	11,28	12,08	13,52	14,48	16,16
s	max. = nominal size	8	10	11	13	17	19	22	24	27	30	32	36
s	min.	7,78	9,78	10,73	12,73	16,73	19,67	21,67	23,67	26,16	29,16	31	35
Weight (7,85 kg/dm3) kg/1000pcs		1,4	3,1	3,2	6	11,7	16,6	21	37,8	51,6	68	86	127

DIN 985 - Prevailing torque type hexagon thin nuts with nonmetallic insert

Equivalent norms: ISO 7040; CSN 21492; UNI 7474;

Legend:
s - size of the hexagon
e - the diameter of the circumscribed circle (not less than)
d - the nominal diameter of the thread
h - height of the nut
m - hight of the nut part
da - Turning diameter shrinkage
dw - contact surface diameter
Makings:
Steel: 5,6,8,10
Stainless: A2,A4
Plastic: -
Non Ferrous: -
Thread: 6H
Notes:
Table according to DIN 985:
dimensions in mm

Thread d		M3	M4	M5	M6	M7	M8	M10	M12	M14	M16	M18
		-	-	-	-	-	M8x1	M10x1	M12x1,5	M14x1,5	M16x1,5	M18x2
		-	-	-	-	-	-	M10x1,25	M12x1,25	-	-	M18x1,5
P		0,5	0,7	0,8	1	1	1,25	1,5	1,75	2	2	2,5
da	min.	3	4	5	6	7	8	10	12	14	16	18
da	max.	3,45	4,6	5,75	6,75	7,75	8,75	10,8	13	15,1	17,3	19,5
dw	min.	4,6	5,9	6,9	8,9	9,6	11,6	15,6	17,4	20,5	22,5	24,9
e	min.	6,01	7,66	8,79	11,05	12,12	14,38	18,9	21,1	24,49	26,75	29,56
h	nominal= max.	4	5	5	6	7,5	8	10	12	14	16	18,5
h	min.	3,7	4,7	4,7	5,7	7,14	7,64	9,64	11,57	13,3	15,3	17,66
m	min.	2,4	2,9	3,2	4	4,7	5,5	6,5	8	9,5	10,5	13
m´	min.	1,65	2,2	2,75	3,3	3,85	4,4	5,5	6,6	7,7	8,8	9,9
s	nominal= max.	5,5	7	8	10	11	13	17	19	22	24	27
s	min.	5,32	6,78	7,78	9,78	10,73	12,73	16,73	18,67	21,67	23,67	26,16
Weight (7,85Kg/dm3) kg/1000pcs		0,5	1	1,4	2,4	3	5,1	10,6	17,2	26	34	45


Thread d		M20	M22	M24	M27	M30	M33	M36	M39	M42	M45	M48
		M20x2	M22x2	M24x2	M27x2	M30x2	M33x2	M36x3	M39x3	M42x3	M45x3	M48x3
		M20x1,5	M22x1,5	-	-	-	-	-	-	-	-	-
P		2,5	2,5	3	3	3,5	3,5	4	4	4,5	4,5	5
da	min.	20	22	24	27	30	33	36	39	42	45	48
da	max.	21,6	23,7	25,9	29,1	32,4	35,6	38,9	42,1	45,4	48,6	51,8
dw	min.	27,7	29,5	33,2	38	42,7	46,6	51,1	55,9	60,6	64,7	69,4
e	min.	32,95	35,03	39,55	45,2	50,85	55,37	60,79	66,44	72,09	76,95	82,6
h	nominal= max.	20	22	24	27	30	33	36	39	42	45	48
h	min.	18,7	20,7	22,7	25,7	28,7	31,4	34,4	37,4	40,4	43,4	46,4
m	min.	14	15	15	17	19	22	25	27	29	32	36
m´	min.	11	12,2	13,2	14,8	16,5	18,2	19,8	21,5	23,1	24,8	26,5
s	nominal= max.	30	32	36	41	46	50	55	60	65	70	75
s	min.	29,16	31	35	40	45	46	53,8	58,8	63,8	68,1	73,1
Weight (7,85Kg/dm3) kg/1000pcs		65	75	100	162	212	317	415	499	628	771	998

UNC and UNF Nylon Insert Locknuts

	af		ac	t	e	u	f
Diam	Min	Max	Min	Max	Min	Max	Min
No 10		0.376	0.41	0.249	0.14
1/4	0.43	0.439	0.482	0.328	0.225
5/16	0.492	0.502	0.552	0.359	0.25	0.318	0.19
3/8	0.533	0.564	0.622	0.468	0.335	0.348	0.22
7/16	0.615	0.627	0.698	0.468	0.324	0.413	0.26
1/2	0.741	0.752	0.837	0.609	0.464	0.476	0.32
9/16	0.865	0.877	0.978	0.656	0.469	0.58	0.348
5/8	0.928	0.940	1.051	0.765	0.593	0.54	0.38
3/4	1.052	1.064	1.191	0.89	0.742	0.656	0.428
7/8	1.269	1.252	1.403	0.999	0.79	0.762	0.298
1	1.45	1.440	1.615	1.078	0.825	0.788	0.548
1 1/8	1.631	1.627	1.826	1.203	0.93	0.864	0.589
1 1/4	1.812	1.815	2.038	1.422	1.125	1.022	0.697
1 3/8		2.008	2.232	1.609	1.282	1.05	0.757
1 1/2	2.175	2.197	2.444	1.64	1.313	1.181	0.818
1 3/4	2.662	2.762	3.035	2.052	1.689
2	3.025	3.137	3.449	2.367	1.75

BSW Nylon Insert Locknuts

	af		ac	t	e
Diam	Min	Max	Max	Max	Min
3/16	0.376	0.376	0.410	0.249	0.140
1/4	0.445	0.435	0.510	0.312	0.200
5/16	0.525	0.515	0.610	0.378	0.250
3/8	0.600	0.585	0.690	0.438	0.312
7/16	0.710	0.695	0.820	0.528	0.375
1/2	0.820	0.800	0.950	0.593	0.437
5/8	1.010	0.985	1.170	0.722	0.552
3/4	1.200	1.175	1.390	0.960	0.677
7/8	1.300	1.270	1.500	1.012	0.740
1	1.480	1.450	1.710	1.113	0.865
1 1/8	1.670	1.640	1.930	1.239	0.990
1 1/4	1.860	1.815	2.150	1.440	1.105
1 1/2	2.220	2.175	2.560	1.734	1.355
1 3/4	2.580	2.520	2.980	1.985	1.605
2	2.760	2.700	3.190	2.125	1.730