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JIS B1169
MATERIAL : SS400,304
d
a
b
c
d
h
H
M8
32.6
20
6.3
16
23
39.3
M10
41
25
8
20
28
48.5
M12
50
30
10
25
36
61
M16
60
35
12.5
30
42
72
M20
72
40
16
35
50
86
M24
90
50
20
45
66
111
3/8
41
24.5
8.3
20
28
49
1/2
49.5
30
10
25
38
62