Click Specification

(Non-preferred) dimensions in parentheses.

Finished Circular Washers

JIS B 1256 (F) - 1978

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^*Models with different eras.

Nominal Diameter

Φ2

(Φ2.2)

(Φ2.3)

Φ2.5

(Φ2.6)

Φ3

(Φ3.5)

Φ4

(Φ4.5)

Φ5

Φ6

Φ8

d	min=nominal size
	max
d_c	max=nominal size
	min
h	Nominal Size
	max
	min

2.2	2.4	2.5	2.7	2.8	3.2	3.7	4.3	4.8	5.3	6.4	8.4
2.35	2.55	2.65	2.85	2.95	3.4	3.9	4.5	5	5.5	6.65	8.65
5	6.5	6.5	6.5	6.5	7	9	9	10	10	12.5	17
4.7	6.15	6.15	6.15	6.15	6.65	8.65	8.65	9.65	9.65	12.1	16.6
0.3	0.5	0.5	0.5	0.5	0.5	0.5	0.8	0.8	1	1.6	1.6
0.34	0.55	0.55	0.55	0.55	0.55	0.55	0.9	0.9	1.1	1.75	1.75
0.26	0.45	0.45	0.45	0.45	0.45	0.45	0.7	0.7	0.9	1.45	1.45

Nominal Diameter

Φ10

Φ12

(Φ14)

Φ16

(Φ18)

Φ20

(Φ22)

Φ24

(Φ27)

Φ30

(Φ33)

Φ36

d	min=nominal size
	max
d_c	max=nominal size
	min
h	Nominal Size
	max
	min

10.5	13	15	17	19	21	23	25	28	31	34	37
10.8	13.3	15.3	17.3	19.35	21.35	23.35	25.35	28.35	31.4	34.4	37.4
21	24	28	30	34	37	39	44	50	56	60	66
20.5	23.5	27.5	29.5	33.4	36.4	38.4	43.4	49.4	55.2	59.2	65.2
2	2.5	2.5	3	3	3	3	4	4	4	5	5
2.2	2.75	2.75	3.3	3.3	3.3	3.3	4.4	4.4	4.4	5.5	5.5
1.8	2.25	2.25	2.7	2.7	2.7	2.7	3.6	3.6	3.6	4.5	4.5

Nominal Diameter

(Φ39)

Φ42

(Φ45)

Φ48

(Φ52)

Φ56

(Φ60)

Φ64

(Φ68)

Φ72

(Φ76)

Φ80

d	min=nominal size
	max
d_c	max=nominal size
	min
h	Nominal Size
	max
	min

40	43	46	50	54	58	62	66	70	74	78	82
40.4	43.4	46.4	50.4	54.5	58.5	62.5	66.5	70.5	74.5	78.5	82.55
72	78	85	92	98	105	110	115	120	125	135	140
71.2	77.2	84	91	97	104	109	114	119	123.8	133.8	138.8
6	7	7	8	8	9	9	9	10	10	10	12
6.6	7.7	7.7	8.7	8.7	9.7	9.7	9.7	11	11	11	13
5.4	6.3	6.3	7.3	7.3	8.3	8.3	8.3	9	9	9	11

Alternative history

JIS B 1256F - 1978 JIS B 1256NA - 2008

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