This product is regulated by the following standards:

DIN 6798 UNI 8842 NF E27-624 NF E27-625 NF E27-627 NF E25-512

Technical data Send your request for quotation

Serrated lock washers: external form A, internal form J, form V

This product is regulated by the following standards:

Standard DIN 6798

Serrated lock washers: external form A, internal form J

Dimensions in mm : source DIN 6798 Withdrawn
Publication date 07/1988 - Supersedes DIN 6798: 08/1971
Thread size	Form A				Form J				Form V
Thread size	d1 min=nom	d2 max=nom	s nom	Nr. of teeth	d1 min=nom	d2 max=nom	s nom	Nr. of teeth	d1 min=nom	d2 max=nom	s nom	Nr. of teeth
M 1.6	1.7	3.6	0.3	9	1.7	3.6	0.3	7	-	-	-	-
M 2	2.2	4.5	0.3	9	2.2	4.5	0.3	7	2.2	4.2	0.2	10
M 2.5	2.7	5.5	0.4	9	2.7	5.5	0.4	7	2.7	5.1	0.2	10
M 3	3.2	6	0.4	9	3.2	6	0.4	7	3.2	6	0.2	12
M3.5	3.7	7	0.5	10	3.7	7	0.5	8	3.7	7	0.25	12
M 4	4.3	8	0.5	11	4.3	8	0.5	8	4.3	8	0.25	14
M 5*	5.1	9	0.5	11	5.1	9	0.5	8	-	-	-	-
M 5	5.3	10	0.6	11	5.3	10	0.6	8	5.3	9.8	0.3	14
M 6	6.4	11	0.7	12	6.4	11	0.7	9	6.4	11.8	0.4	16
M 7	7.4	12.5	0.8	14	7.4	12.5	0.8	10	-	-	-	-
M 8*	8.2	14	0.8	14	8.2	14	0.8	10	-	-	-	-
M 8	8.4	15	0.8	14	8.4	15	0.8	10	8.4	15.3	0.4	18
M 10	10.5	18	0.9	16	10.5	18	0.9	12	10.5	19	0.5	20
M 12	13	20.5	1	16	13	20.5	1	12	13	23	0.5	26
M 14	15	24	1	18	15	24	1	14	15	26.2	0.5	28
M 16	17	26	1.2	18	17	26	1.2	14	17	30.2	0.6	30
M 18	19	30	1.4	18	19	30	1.4	14	-	-	-	-
M 20	21	33	1.4	20	21	33	1.4	16	-		-	-
M 22	23	36	1.5	20	23	36	1.5	16	-	-	-	-
M 24	25	38	1.5	20	25	38	1.5	16	-	-	-	-
M 27	28	44	1.6	22	28	44	1.6	18	-	-	-	-
M 30	31	48	1.6	22	31	48	1.6	18	-	-	-	-

* for hexagon screws only

Dimensions in mm : source DIN 6798 Publication date: 1988 ≈ weigths
Thread size	d1 min nom	Form A	Form J	Form V
Thread size	d1 min nom	≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm3)	≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm3)	≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm3)
M 1.6	1.7	0.02	0.02	-
M 2	2.2	0.03	0.03	0.025
M 2.5	2.7	0.045	0.045	0.03
M 3	3.2	0.06	0.06	0.04
M3.5	3.7	0.11	0.11	0.075
M 4	4.3	0.14	0.14	0.1
M 5*	5.1	-	-	-
M 5	5.3	0.28	0.28	0.2
M 6	6.4	0.36	0.36	0.3
M 7	7.4	0.5	0.5	-
M 8*	8.2	-	-	-
M 8	8.4	0.8	0.8	0.5
M 10	10.5	1.25	1.25	1
M 12	13	1.6	1.6	1.5
M 14	15	2.3	2.3	1.9
M 16	17	2.9	2.9	2.3
M 18	19	5	5	-
M 20	21	6	6	-
M 22	23	7.5	7.5	-
M 24	25	8	8	-
M 27	28	12	12	-
M 30	31	14	14	-

Standard UNI 8842

Serrated lock washers

Dimensions in mm - source UNI 8842 Withdrawn
Publication date: 04/1985
Thread size	Form A				Form J				Form V
Thread size	d1 min=nom	d2 max=nom	s nom	Nr. of teeth	d1 min=nom	d2 max=nom	s nom	Nr. of teeth	d1 min=nom	d2 max nom	s	Nr. of teeth
M 1.6	1.7	3.6	0.3	9	1.7	3.6	0.3	7	-	-	-	-
M 1.8	2	4	0.3	9	2	4	0.3	7	-	-	-	-
M 2	2.2	4.5	0.3	9	2.2	4.5	0.3	7	2.2	4.5	0.2	10
M 2.2	2.4	5	0.4	9	2.4	5	0.4	7	-	-	-	-
M 2.5	2.7	5.5	0.4	9	2.7	5.5	0.4	7	2.7	5.1	0.2	10
M 3	3.2	6	0.4	9	3.2	6	0.4	7	3.2	6	0.2	12
M3.5	3.7	7	0.5	10	3.7	7	0.5	8	3.7	7	0.25	12
M 4	4.3	8	0.5	11	4.3	8	0.5	8	4.3	8	0.25	14
M 5	5.3	10	0.6	11	5.3	10	0.6	8	5.3	9.8	0.3	14
M 6	6.4	11	0.7	12	6.4	11	0.7	9	6.4	11.8	0.4	16
M 7	7.4	12.5	0.8	14	7.4	12.5	0.8	10	-	-	-	-
M 8	8.4	15	0.8	14	8.4	15	0.8	10	8.4	15.3	0.4	18
M 10	10.5	18	0.9	16	10.5	18	0.9	12	10.5	19	0.5	20
M 12	13	20.5	1	16	13	20.5	1	12	13	23	0.5	26
M 14	15	24	1	18	15	24	1	14	15	26.2	0.6	28
M 16	17	26	1.2	18	17	26	1.2	14	17	30.2	0.6	30
M 18	19	30	1.4	18	19	30	1.4	14	-	-	-	-
M 20	21	33	1.4	20	21	33	1.4	16	-	-	-	-
M 22	23	36	1.5	20	23	36	1.5	16	-	-	-	-
M 24	25	38	1.5	20	25	38	1.5	16	-	-	-	-
M 27	28	44	1.6	22	28	44	1.6	18	-	-	-	-
M 30	31	48	1.6	22	31	48	1.6	18	-	-	-	-

Standard NF E27-624

Serrated lock washers: external - Flat Shape

This standard gives the main characteristics of flat-shaped serrated lock washers: external, with overlapping outer teeth. These washers are intended to oppose the loosening of screwed fasteners. They can be used under the heads of right-hand threaded screws and nuts, of quality classes less than or equal to 8.8.

Dimensions in mm: source NF E27-624 form A Withdrawn The dimensions below refer to the washer not under stress
Publication date 10/1981
Thread size	Form A
Thread size	d1 H14	d2 JS15	s nom	Nr. of teeth
M 2	2.05	4.5	0.3	8
M 2.5	2.55	5.5	0.3	10
M 3	3.05	6	0.4	10
M3.5	3.65	7	0.4	12
M 4	4.10	8	0.5	12
M 4.5	4.60	8.5	0.5	12
M 5	5.10	9.2	0.6	12
M 6	6.10	11	0.7	12
M 7	7.20	12	0.7	14
M 8	8.10	14	0.8	14
M 10	10.20	18	0.9	16
M 12	12.30	20	1	18
M 14	14.30	24	1.1	20
M 16	16.30	26	1.2	20
M 18	18.5	30	1.4	20
M 20	20.5	32.5	1.4	22
M 22	23	36	1.5	24
M 24	24.5	38	1.5	24
M 27	27.60	44	1.6	24
M 30	30.6	48	1.6	26

Standard NF E27-625

Serrated lock washers: internal form J

This standard gives the main characteristics of flat-shaped serrated lock washers with overlapping internal teeth. These washers are intended to oppose the loosening of screwed fasteners. They can be used under the heads of right-hand threaded screws and nuts, of quality classes less than or equal to 8.8.

Dimensions in mm: source NF E27-625 form J Withdrawn The dimensions below refer to the washer not under stress
Publication date 10/1981
Thread size	Form J
Thread size	d1 H14	d2 JS15	s nom	Nr. of teeth
M1.6	1.65	3.4	0.2	6
M 2	2.05	4.5	0.3	6
M 2.5	2.55	5.5	0.3	8
M 3	3.05	6	0.4	8
M3.5	3.65	7	0.4	8
M 4	4.10	8	0.5	8
M 4.5	4.60	8.5	0.5	8
M 5	5.10	9.2	0.6	8
M 6	6.10	11	0.7	10
M 7	7.20	12	0.7	12
M 8	8.10	14	0.8	12
M 10	10.20	18	0.9	12
M 12	12.30	20	1	14
M 14	14.30	24	1.1	16
M 16	16.30	26	1.2	16
M 18	18.5	30	1.4	16
M 20	20.5	32.5	1.4	16
M 22	23	36	1.5	18
M 24	24.5	38	1.5	20
M 27	27.60	44	1.6	20
M 30	30.6	48	1.6	22

Dimensions in mm: source NF E27-625 Form J narrow Withdrawn

The dimensions below refer to the washer not under stress

Publication date 10/1981

Thread size

Form J NARROW

d1 H14

d2 JS15

s nom

Nr. of teeth

M 2.5

2.55

4.7

0.3

M3.5

3.60

5.7

0.4

M 5

5.10

7.2

0.4

M 6

6.10

9.1

0.4

M 8

8.15

10.8

0.6

M 10

10.20

14.2

0.5

M 12

12.10

16.9

0.5

M 14

14.40

18.6

0.6

M 16

16.50

20.7

0.6

Standard NF E27-627

Serrated lock washers: form V

Dimensions in mm: source NF E27-627 form V Withdrawn The dimensions below refer to the washer not under stress
Publication date 10/1982
Thread size	Form V
Thread size	d1 H14	d2 JS15	s nom	Nr. of teeth
M 2	2.1	4.5	0.10	10
M2.5	2.6	5.5	0.20	10
M3	3.1	6	0.20	10
M 4	4.2	8	0.25	14
M 5	5.2	10	0.30	14
M 6	6.3	12	0.30	16
M 8	8.3	15.5	0.40	18
M 10	10.4	19	0.40	20
M 12	12.4	23	0.50	26
M 14	14.4	20.7	0.60	28
M16	16.4	31	0.60	30

Standard NF E25-512

Conical Washers Internal Tooth - Symbol CDJ

This document specifies the dimensions and characteristics of conical washers with internal teeth, in carbon steel, of nominal diameter 2.5 mm to 16 mm. It defines the tests to be carried out and the designation. The conical washers with internal teeth are intended for static use in a screwed assembly (screws of quality class 6.8 or 8.8, and corresponding nuts).

Dimensions in mm: source NF E25-512 Withdrawn
Publication date 10/1984
d1 nominal diameter	d2 nom	s nom	h min	h max
2.5	6	0.4	0.85	1.2
3	8.5	0.5	1.1	1.5
4	11	0.6	1.4	1.9
4	14	0.8	1.8	2.4
5	12	0.8	1.75	2.3
5	16	1	2.2	3
6	14	0.7	1.75	2.3
6	18	1	2.2	3
7	16	0.8	1.85	2.5
8	17.5	0.9	2	2.7
8	22	1.2	2.55	3.5
10	20	1	2.2	3
10	26	1.4	3	4.1
12	24	1	2.4	3.2
12	32	1.4	3.7	4.8
14	27.5	1.2	2.85	3.8
16	32	1.4	3.3	4.4

Serrated lock washers: external form A, internal form J, form V

Dimensions in mm : source DIN 6798 Withdrawn
Publication date 07/1988 - Supersedes DIN 6798: 08/1971
Thread size	Form A				Form J				Form V
Thread size	d1 min=nom	d2 max=nom	s nom	Nr. of teeth	d1 min=nom	d2 max=nom	s nom	Nr. of teeth	d1 min=nom	d2 max=nom	s nom	Nr. of teeth
M 1.6	1.7	3.6	0.3	9	1.7	3.6	0.3	7	-	-	-	-
M 2	2.2	4.5	0.3	9	2.2	4.5	0.3	7	2.2	4.2	0.2	10
M 2.5	2.7	5.5	0.4	9	2.7	5.5	0.4	7	2.7	5.1	0.2	10
M 3	3.2	6	0.4	9	3.2	6	0.4	7	3.2	6	0.2	12
M3.5	3.7	7	0.5	10	3.7	7	0.5	8	3.7	7	0.25	12
M 4	4.3	8	0.5	11	4.3	8	0.5	8	4.3	8	0.25	14
M 5*	5.1	9	0.5	11	5.1	9	0.5	8	-	-	-	-
M 5	5.3	10	0.6	11	5.3	10	0.6	8	5.3	9.8	0.3	14
M 6	6.4	11	0.7	12	6.4	11	0.7	9	6.4	11.8	0.4	16
M 7	7.4	12.5	0.8	14	7.4	12.5	0.8	10	-	-	-	-
M 8*	8.2	14	0.8	14	8.2	14	0.8	10	-	-	-	-
M 8	8.4	15	0.8	14	8.4	15	0.8	10	8.4	15.3	0.4	18
M 10	10.5	18	0.9	16	10.5	18	0.9	12	10.5	19	0.5	20
M 12	13	20.5	1	16	13	20.5	1	12	13	23	0.5	26
M 14	15	24	1	18	15	24	1	14	15	26.2	0.5	28
M 16	17	26	1.2	18	17	26	1.2	14	17	30.2	0.6	30
M 18	19	30	1.4	18	19	30	1.4	14	-	-	-	-
M 20	21	33	1.4	20	21	33	1.4	16	-		-	-
M 22	23	36	1.5	20	23	36	1.5	16	-	-	-	-
M 24	25	38	1.5	20	25	38	1.5	16	-	-	-	-
M 27	28	44	1.6	22	28	44	1.6	18	-	-	-	-
M 30	31	48	1.6	22	31	48	1.6	18	-	-	-	-

* for hexagon screws only

Dimensions in mm : source DIN 6798 Publication date: 1988 ≈ weigths
Thread size	d1 min nom	Form A	Form J	Form V
Thread size	d1 min nom	≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm3)	≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm3)	≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm3)
M 1.6	1.7	0.02	0.02	-
M 2	2.2	0.03	0.03	0.025
M 2.5	2.7	0.045	0.045	0.03
M 3	3.2	0.06	0.06	0.04
M3.5	3.7	0.11	0.11	0.075
M 4	4.3	0.14	0.14	0.1
M 5*	5.1	-	-	-
M 5	5.3	0.28	0.28	0.2
M 6	6.4	0.36	0.36	0.3
M 7	7.4	0.5	0.5	-
M 8*	8.2	-	-	-
M 8	8.4	0.8	0.8	0.5
M 10	10.5	1.25	1.25	1
M 12	13	1.6	1.6	1.5
M 14	15	2.3	2.3	1.9
M 16	17	2.9	2.9	2.3
M 18	19	5	5	-
M 20	21	6	6	-
M 22	23	7.5	7.5	-
M 24	25	8	8	-
M 27	28	12	12	-
M 30	31	14	14	-

Full list of Suppliers of Serrated lock washers: external form A, internal form J, form V

Italy

Filtomatic Fasteners Srl

Leading manufacturer of stainless steel washers and compensation rings for ball bearings. Standard and special parts.

India

B...

Manufacturer of washers

Italy

B...

Manufacturer of retaining rings for shaftsand bores- Din 47; Din 472 mm and inches. Toothed washers.

Quality certificates: ISO/TS 16949-2009; ISO 9001-2008

China

B...

Manufacturer of fasteners, specialized in washers and stampings.

Spain

C...

Manufacturer of plain washers, spring washers, security and toothed washers

Spain

D...

Producer of hose clamps, cage nuts, rings, toothed washers and fast fixings

F...

Manufacturer of standard and special washers in different materials, with internal diameter from 2.5 up to 80mm.

USA

F...

Manufacturer of metal stampings, washers and component assemblies

Italy

G...

Distributor of retaining rings, Spiral retaining rings, wave springs, Disc springs, Washers, Elastic pins, Pins, Keys, Ground flat/bar stocks, Locking nuts, washers, Miniplast plastic parts, Metallic screws, nuts, bolts.

Germany

G...

Manufacturer of washers and high quality safety shims. All materials: aluminium, bronze, iron and steel, stainless steel (A2, A4), copper, brass etc.

France

G...

Manufacturer of flat, conical and toothed Washers

Italy

G...

Producer of spring lock, toothed and special washers.

Quality Certificates: ISO 9001; ISO 14001; ISO/TS 16949

Germany

G...

Specialised producer of split spring washers and toothed washers

India

G...

Manufacturer of washers in stainless steel: flat, spring, toothed, wave

China

H...

Manufacturer of tab washers, lock washers, plain washers and stampings

China

H...

Manufacturer of lock washers, flat washers, spring and tab washers

India

I...

Manufacturer of washers, disc springs, wave spring washers, serrated safety washers, Belleville washers, serrated washers & lockrite washers.

J...

Manufacturer of spring lock washers and shakeproof washers. Metric and imperial sizes. Production of wire for spring and retaining rings.

China

J...

Manufacturer of retaining rings, circlips, snaprings, disc springs, spring pins, keys.

China

J...

Manufacturer of washers

China

J...

Fastener manufacturing company with more than 15 years experience.

Production range: all kinds of flat washers, spring washers, toothed washers, square washers, custom special washers.

Materials: stainless steel, carbon steel, brass.

China

J...

Manufacturer of stainless steel flat washers, spring washers, square washers, tab washers, toothed lock washers and stamping parts

India

K...

Manufacturer of standard and special washers

Taiwan

M...

Manufacturer specialized in cage nuts, u-nuts, clips and serrated lock washers

China

N...

Manufacturer of washers and stampings

Germany

P...

Distributor specialized in rings for shafts, shim washers and disc springs

India

R...

Manufacturer of plain, spring, waved, high tensile, square and toothed washers

Italy

R...

Manufacturer of washers DIN 125, 433, 9021

Germany

R...

Producer of spring spring steel products: washers, pins and stampings

China

R...

Manufacturer of toothed washers, contact washers.

Spain

S...

Manufacturer of retaining rings, starlock washers, toothed washers, slotted spring pins, quick fixings and special parts

India

S...

Manufacturer of cage nuts, washers, rings and stampings

Germany

S...

Manufacturer of disc springs

China

S...

Manufacturer specialized in washers. Production of 200,000 washers/day.

Flat, spring, toothed, square and wave washers, etc...

India

Suppliers of Serrated lock washers: external form A, internal form J, form V

Technical data

Standard DIN 6798

Standard UNI 8842

Standard NF E27-624

Standard NF E27-625

Standard NF E27-627

Standard NF E25-512

Details