Technical data for Single coil spring square washers for screws with cylindrical heads

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This product is regulated by the following standards:

Standard DIN 7980

Attention

This standard has been withdrawn

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Dimensions in mm - source DIN 7980 - Withdrawn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
M 4
M 5
M 6
M 8
M 10
M 12
M 14
M 16
M 18
M 20
M 22
M 24
M 27
M 30

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH,Burggrafenstraße 6, 10787 Berlin, Germany.
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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
M 6
M 8
M 10
M 12
M 14
M 16
M 18
M 20
M 22
M 24
M 27
M 30
M 33
M 36
M 39
M 42
M 45
M 48


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
M 8
M 10
M 12
M 14
M 16
M 18
M 20
M 22
M 24
M 27
M 30
M 33
M 36
M 39
M 42
M 45
M 48

Technical data for Single coil spring square washers for screws with cylindrical heads

This product is regulated by the following standards:

Standard DIN 7980

Standard BS 4464 A

Standard BS 4464 B

Standard BS 4464 BP

Single coil spring square washers for screws with cylindrical heads

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