Click Specification

(Non-preferred) dimensions in parentheses.

Metric Spring Lock Washers - Type A

BS 4464 - 1969

Display drawing:

Size

(M3.5)

M10

M12

(M14)

M16

(M18)

d	max
d	min
h	Nominal Size
	max
	min
d_c	max

3.3	3.8	4.35	5.35	6.4	8.55	10.6	12.6	14.7	16.9	19
3.1	3.6	4.1	5.1	6.1	8.2	10.2	12.2	14.2	16.3	18.3
1	1	1.2	1.5	1.5	2	2.5	2.5	3	3.5	3.5
1.1	1.1	1.3	1.6	1.6	2.1	2.65	2.65	3.2	3.7	3.7
0.9	0.9	1.1	1.4	1.4	1.9	2.35	2.35	2.8	3.3	3.3
5.5	6.0	6.95	8.55	9.6	12.75	15.9	17.9	21.1	24.3	26.4

Size

M20

(M22)

M24

(M27)

M30

(M33)

M36

(M39)

M42

(M45)

M48

d	max
d	min
h	Nominal Size
	max
	min
d_c	max

21.1	23.3	25.3	28.5	31.5	34.6	37.6	40.8	43.8	46.8	50
20.3	22.4	24.4	27.5	30.5	33.5	36.5	39.6	42.6	45.6	48.8
4.5	4.5	5	5	6	6	7	7	8	8	8
4.7	4.7	5.2	5.2	6.2	6.2	7.25	7.25	8.25	8.25	8.25
4.3	4.3	4.8	4.8	5.8	5.8	6.75	6.75	7.75	7.75	7.75
30.5	32.7	35.7	38.9	43.9	47.0	52.1	55.3	60.3	63.3	66.5

①,H=2h±15%
②,h≈n

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