This product is regulated by the following standards:

Technical data

Standard DIN 7980

Single coil spring square washers for screws with cylindrical heads

Dimensions in mm - source DIN 7980 - Withdrawn
Publication Date: 10 - 1987 Supersedes DIN 7980 : 12-1972
Thread size	d1 min	d2 max	s	h	b	≈ weight in kg x1000 pcs
M 3	3.1	5.6	1	2	1	0.105
M 3.5	3.6	6.1	1	2	1	0.114
M 4	4.1	7	1.2	2.4	1.2	0.195
M 5	5.1	8.6	1.6	3	1.6	0.37
M 6	6.1	9.7	1.6	3	1.6	0.425
M 8	8.1	12.8	2	4	2	1.06
M 10	10.2	16.1	2.5	5	2.5	1.96
M 12	12.2	18.3	2.5	5	2.5	2.28
M 14	14.2	21.4	3	6	3	3.8
M 16	16.2	24.6	3.5	7	3.5	5.94
M 18	18.2	26.6	3.5	7	3.5	6.6
M 20	20.2	30.6	4.5	9	4.5	12.3
M 22	22.5	35.9	4.5	9	4.5	13.6
M 24	24.5	38.9	5	10	5	18.1
M 27	27.5	38.9	5	10	5	20.6
M 30	31.7	44.1	6	12	6	32

Standard BS 4464 A

Single coil spring square washers

Dimensions in mm - source BS 4464 Table A
Publication Date: 05/1969

Thread size	d1 min	d2 max	s	h = 2 s±15%	b
M 3	3.1	5.5	1	2	1
M 3.5	3.6	6	1	2	1
M 4	4.1	6.95	1.2	2.4	1.2
M 5	5.1	8.55	1.6	3	1.6
M 6	6.1	9.6	1.6	3	1.6
M 8	8.2	12.75	2	4	2
M 10	10.2	15.9	2.5	5	2.5
M 12	12.2	17.9	2.5	5	2.5
M 14	14.2	21.1	3	6	3
M 16	16.3	24.3	3.5	7	3.5
M 18	18.3	26.4	3.5	7	3.5
M 20	20.3	30.5	4.5	9	4.5
M 22	22.4	32.7	4.5	9	4.5
M 24	24.4	35.7	5	10	5
M 27	27.5	38.9	5	10	5
M 30	30.5	43.9	6	12	6
M 33	33.5	47	6	12	6
M 36	36.5	52.1	7	14	7
M 39	39.6	55.3	7	14	7
M 42	42.6	60.3	8	16	8
M 45	45.6	63.3	8	16	8
M 48	48.8	66.5	8	16	8

Standard BS 4464 B

Spring lock washers

Dimensions in mm - source BS 4464 Table B
Publication Date: 05/1969


Thread size	d1 min	d2 max	b min	b max	s min	s max
M 3	3.1	5.5	1.2	1.4	0.7	0.9
M 3.5	3.6	6	1.2	1.4	0.7	0.9
M 4	4.1	6.95	1.4	1.6	0.8	1
M 5	5.1	8.55	1.7	1.9	1.1	1.3
M 6	6.1	9.6	2.35	2.65	1.5	1.7
M 8	8.2	12.75	2.85	3.15	1.9	2.1
M 10	10.2	15.9	3.3	3.7	2.05	2.35
M 12	12.2	17.9	3.8	4.2	2.35	2.65
M 14	14.2	21.1	4.3	4.7	2.85	3.15
M 16	16.3	24.3	4.8	5.2	3.3	3.7
M 18	18.3	26.4	4.8	5.2	3.3	3.7
M 20	20.3	30.5	5.8	6.2	3.8	4.2
M 22	22.4	32.7	5.8	6.2	3.8	4.2
M 24	24.4	35.7	6.75	7.25	4.8	5.2
M 27	27.5	38.9	6.75	7.25	4.8	5.2
M 30	30.5	43.9	7.75	8.25	5.75	6.25
M 33	33.5	47	9.75	10.25	5.75	6.25
M 36	36.5	52.1	9.75	10.25	5.75	6.25
M 39	39.6	55.3	9.75	10.25	5.75	6.25
M 42	42.6	60.3	11.75	12.25	6.75	7.25
M 45	45.6	63.3	11.75	12.25	6.75	7.25
M 48	48.8	66.5	11.75	12.25	6.75	7.25

Standard BS 4464 BP

Single coil spring square washers

Dimensions in mm - source BS 4464 Table BP
Publication Date: 05/1969


Thread size	d1 min	d2 max	k	b min	b max	s min	s max	h=(2s+2k)±15%
M 3.5	3.6	6.6	0.15	1.2	1.4	0.7	0.9	1.9
M 4	4.1	7.55	0.15	1.4	1.6	0.8	1	2.1
M 5	5.1	9.15	0.15	1.7	1.9	1.1	1.3	2.7
M 6	6.1	11.7	0.2	2.35	2.65	1.5	1.7	3.6
M 8	8.2	14.85	0.3	2.85	3.15	1.9	2.1	4.6
M 10	10.2	18	0.3	3.3	3.7	2.05	2.35	5
M 12	12.2	21	0.4	3.8	4.2	2.35	2.65	5.8
M 14	14.2	24.1	0.4	4.3	4.7	2.85	3.15	6.8
M 16	16.3	27.3	0.4	4.8	5.2	3.3	3.7	7.8
M 18	18.3	29.4	0.4	4.8	5.2	3.3	3.7	7.8
M 20	20.3	33.5	0.4	5.8	6.2	3.8	4.2	8.8
M 22	22.4	35.7	0.4	5.8	6.2	3.8	4.2	8.8
M 24	24.4	39.8	0.5	6.75	7.25	4.8	5.2	11
M 27	27.5	43	0.5	6.75	7.25	4.8	5.2	11
M 30	30.5	48	0.8	7.75	8.25	5.75	6.25	13.6
M 33	33.5	55.1	0.8	9.75	10.25	5.75	6.25	13.6
M 36	36.5	58.1	0.8	9.75	10.25	5.75	6.25	13.6
M 39	39.6	61.3	0.8	9.75	10.25	5.75	6.25	13.6
M 42	42.6	68.3	0.8	11.75	12.25	6.75	7.25	15.6
M 45	45.6	71.3	0.8	11.75	12.25	6.75	7.25	15.6
M 48	48.8	74.5	0.8	11.75	12.25	6.75	7.25	15.6

Single coil spring square washers for screws with cylindrical heads

Dimensions in mm - source DIN 7980 - Withdrawn
Publication Date: 1987
Thread size	d1 min	d2 max	s	h	Square section	≈ weight in kg x1000 pcs
M 3	3.1	5.6	1	2	1.15x0.9	0.105
M 3.5	3.6	6.1	1	2	1.15x0.9	0.114
M 4	4.1	7	1.2	2.4	1.30x1.05	0.195
M 5	5.1	8.6	1.6	3	1.70x1.45	0.37
M 6	6.1	9.7	1.6	3	1.70x1.45	0.425
M 8	8.1	12.8	2	4	2.25x1.85	1.06
M 10	10.2	16.1	2.5	5	2.90x2.30	1.96
M 12	12.2	18.3	2.5	5	2.90x2.30	2.28
M 14	14.2	21.4	3	6	3.30x2.70	3.8
M 16	16.2	24.6	3.5	7	3.90x3.20	5.94
M 18	18.2	26.6	3.5	7	3.90x3.20	6.6
M 20	20.2	30.6	4.5	9	5.00x4.10	12.3
M 22	22.5	35.9	4.5	9	5.00x4.10	13.6
M 24	24.5	38.9	5	10	6.00x4.50	18.1
M 27	27.5	38.9	5	10		20.6
M 30	31.7	44.1	6	12		32

Full list of Suppliers of Single coil spring square washers for screws with cylindrical heads

India

Fascor

Manufacturer of blind rivets, solid rivets, fully tubular rivets, semi tubular rivets, bifurcated rivets

Turkey

Gülden Bağlanti Elemanlari Imalat San.

Manufacturer of spring washers and cotter pins

China

Hangzhou Spring Washer Co., Ltd.

Manufacturer specialized in spring washers in different materials, also with double rings

China

Hengshun International Trade (H.K.) Co., Ltd

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

J & L SPRINGLOCKWASHER LTD

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

Italy

PANZERI Spa

Manufacturer of washers and safety devices for fastening

USA

Willie Washer Manufacturing Corporation

Manufacturer of special washers and stampings

China

Bsc Corporation Ltd

BSC CORPORATION LTD is a group founded in 2005, headquartered in Shanghai and developed in two factories, respectively located in Xinghua, Jiangsu province and Liaocheng, Shandong province.

The company is specialized in washers, stamping parts and other kinds of fasteners. The registered capital amounts to 50 million yuan.

Italy

Filtomatic Fasteners Srl

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

Italy

BENERI Spa

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

BSC CORPORATION LTD

Manufacturer of fasteners, specialized in washers and stampings.

Italy

CCZ srl

Distributor of bushings, wave rings and washers

China

Dongtai City Jianglong Metal Manufacturing Co.Ltd

Biggest factory in China producing stainless steel washers.

Fat washers, spring washers, tooth lock washers and stamping parts.

Materials: 316L ,316S33,1.4462.

Flat Washer Solutions

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

Germany

Gebr. Großheim OHG

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

Italy

GROWERMETAL

Producer of spring lock, toothed and special washers.

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

Germany

Güde GmbH

Specialised producer of split spring washers and toothed washers

India

GUJARAT WASHERS MFG

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

China

Hangzhou Chenlong Industry Co.Ltd.

Manufacturer of spring, plain, and waved washers

India

International Industrial Springs IIS

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

China

JIASHAN JINSHUN METAL PRODUCTS CO.LTD

Manufacturer of washers

China

Jiashan Tengyuan Metal Co. Ltd

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

Jiashan Weiyue Fastener Co.Ltd.

Manufacturer of standard and special washers

China

Jiashan Xiaojia Metal Products Co. Ltd.

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

China

JIAXING H.J. TECH INDUSTRY CO. LTD - ZHEJIANG CHANNOV AUTO PARTS CO. LTD

Manufacturer of flat, spring washers and square washers

India

Karam Industries

Manufacturer of standard and special washers

India

M.M. FASTENERS

Manufacturer of Plain Washers, Flat Washers, Spring Washers & Special Sheet Metal & Wire Components, Din 127, Din 125, Din 9021.

India

Leading manufacturers and distributors of cold rolled coils and fasteners in the northern part of India. In our factory, we produce using up-to-date technology and ultra modern and highly advanced equipment.

Poland