GOST 10463-81 Lock Washers

The standard applies to notched and stamped lock washers with external teeth for fasteners with thread sizes from 2 to 24 mm.

The design and dimensions of the washers conform to those shown in the drawing and tables: Table 1 for notched washers, Table 2 for stamped washers.

Type 1

Type 2

• Dimensions are ensured by the tooling.

Table 1

Dimensions in mm

Nominal thread diameter of the fastener	d		D		d₁, max	s	H, min	Number of teeth z
	Nom.	H13	Nom.	h14
2	2.2	+0.14	5.0	-0.30	3.0	0.2	0.6	6
2.5	2.7		6.0		4.0	0.3	0.9
3	3.2	+0.18	7.0	-0.36	4.5			8
4	4.2		9.0		6.2	0.4	1.2	9
5	5.2		10.0		7.2	0.7	2.1	10
6	6.3	+0.22	12.0	-0.43	9.2			12
8	8.4		14.0		11.2	0.8	2.2	16
10	10.5	+0.27	17.0		14.0	1.0	2.5
12	12.5		19.0	-0.52	16.0	1.2	3.0	18
14	14.5		22.0		18.6	1.4
16	16.5		24.0		20.6		3.2	20
18	18.5	+0.33	27.0		23.6	1.7	3.7	22
20	21.0		30.0		26.2		3.9
22	23.0		32.0	-0.62	27.0
24	25.0		36.0		29.4

Table 2

Dimensions in mm

Nominal thread diameter of the fastener	d		D		D₁+-0.1	d₁+-0.1	s	H, min	Number of teeth z
	Nom.	H13	Nom.	h14
3	3.2	+0.18	7.0	-0.36	6.5	2.0	0.4	0.6	8
4	4.2		8.8		8.2	2.2	0.5	1.0
5	5.2		10.2	-0.43	9.4			1.1	9
6	6.3	+0.22	12.2		11.6	2.8	0.6	1.2
8	8.4		15.4		14.4	3.0	0.8	1.7	10
10	10.5	+0.27	18.0		17.0	3.5	0.9	1.9
12	12.5		21.0	-0.52	20.0		1.0		12
14	14.5		23.6		22.8	4.0		2.0
16	16.5		26.5		25.5	4.5	1.2	2.3
18	18.5	+0.33	30.0		28.5	5.0		2.6
20	21.0		33.0	-0.62	31.0			2.4	14
22	23.0		35.0		33.5		1.5	2.9
24	25.0		38.0		36.0	5.5		3.0

Note to Tables 1, 2. The tolerance on washer thickness conforms to the standards for the source material.

Example of a designation for an external-tooth lock washer, type 1, for a fastener with a thread diameter of 12 mm, made of steel 65G, with zinc coating with chromating, coating thickness 6 μm:

Washer 12.65G.016 GOST 10463-81

Same for type 2, made of bronze BrKMts3-1, without coating:

Washer 2.12.BrKMts3-1 GOST 10463-81

The twist angle of the teeth of stamped washers shall not exceed 43° to the plane of the washer. The direction of twist is right-hand.

Technical requirements — per GOST 10461-81.

The theoretical mass of the washers is given in the appendix.

Appendix

For reference

Mass of steel washers

Nominal thread diameter of the fastener, mm	Theoretical mass of 1000 washers, kg
	Type 1	Type 2
2	0.025	-
2.5	0.035	-
3	0.072	0.030
4	0.156	0.100
5	0.327	0.140
6	0.449	0.200
8	0.622	0.560
10	1.100	0.670
12	1.515	1.100
14	2.363	1.240
16	2.622	1.800
18	4.054	2.500
20	4.811	2.800
22	5.189	3.950
24	7.033	4.600

Note. To determine the mass of bronze washers, the mass values given in the table shall be multiplied by a factor of 1.08.

Corresponds to DIN 6798 A.