Click Specification

(Non-preferred) dimensions in parentheses.

Small Domed Cap Nuts, Type 1, Type 2

JIS B 1183 - 2010

Display drawing:

Screw Thread
d

M10

M12

(M14)

M16

(M18)

M20

(M22)

M24

P	Pitch	Coarse thread
		Fine thread
m₁	Nominal Size
	max
	min
m	max
	min
s	max
	min
b₁	min
b₂	Nominal Size
g	≈
A	min
t₁	min
e	≈
d_w	≈
R	≈
r	≈

1.25	1.5	1.75	2	2	2.5	2.5	2.5	3
1	1.25	1.25	1.5	1.5	1.5	1.5	1.5	2
15	18	22	24	28	31	34	38	41
15.3	18.3	22.3	24.3	28.3	31.4	34.4	38.4	41.4
14.7	17.7	21.7	23.7	27.7	30.6	33.6	37.6	40.6
6.5	8	10	11	13	15	16	18	19
6.14	7.64	9.64	10.57	12.57	14.57	15.57	17.57	18.48
12	14	17	19	22	24	27	30	32
11.75	13.75	16.75	18.65	21.65	23.65	26.65	29.65	31.6
8	10	12	14	16	18	20	22	24
6.5	8	10	11	13	15	16	18	19
3.5	4	5	6	6	7	7	7	9
10.5	12.5	14.5	16.5	19.5	21.5	23.5	26.5	28.5
0.5	0.5	0.5	1	1	1	1	1	1
13.9	16.2	19.6	21.9	25.4	27.7	31.2	34.6	37
11.5	13.5	16.5	18	21	23	26	29	31
5.5	6.5	7.5	8.5	10	11	12	13.5	14.5
0.5	0.5	0.5	1	1	1	1	1	1

①,Type 1 is that the hexagonal part and the cap part are integrated and no undercut is provided, type 2 is that the hexagonal part and the cap part are integrated and an undercut is provided, and type 3 is that the hexagonal part and the cap part are welded together.

Alternative history

JIS B 1183 - 2001 JIS B 1183 - 2010

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