ȣĪ
ȣ Ī
5S
10S
20S
40
80
A
B
KS(JIS)
ASTM
KS(JIS)
ASTM
KS(JIS)
ASTM
KS(JIS)
KS(JIS)
ASTM
KS(JIS)
ASTM
6
1/8
10.5
10.29
1.0
-
1.2
1.24
1.5
1.7
1.73
2.4
2.41
8
1/4
13.8
13.72
1.2
-
1.65
1.65
2.0
2.2
2.24
3.0
3.02
10
3/8
17.3
17.15
1.2
-
1.65
1.65
2.0
2.3
2.31
3.2
3.20
15
1/2
21.7
21.34
1.65
1.65
2.1
2.11
2.5
2.8
2.77
3.7
3.73
20
3/4
27.2
26.67
1.65
1.65
2.1
2.11
2.5
2.9
2.87
3.9
3.91
25
1
34.0
33.40
1.65
1.65
2.8
2.77
3.0
3.4
3.38
4.5
4.55
32
1
42.7
42.16
1.65
1.65
2.8
2.77
3.0
3.6
3.56
4.9
4.85
40
1
48.6
48.26
1.65
1.65
2.8
2.77
3.0
3.7
3.68
5.1
5.08
50
2
60.5
60.33
1.65
1.65
2.8
2.77
3.5
3.9
3.91
5.5
5.54
65
2
76.3
73.03
2.1
2.11
3.0
3.05
3.5
5.2
5.16
7.0
7.01
80
3
89.1
88.90
2.1
2.11
3.0
3.05
4.0
5.5
5.49
7.6
7.62
90
3
101.6
101.60
2.1
2.11
3.0
3.05
4.0
5.7
5.74
8.1
8.08
100
4
114.3
114.30
2.1
2.11
3.0
3.05
4.0
6.0
6.02
8.6
8.56
125
5
139.8
141.30
2.8
2.77
3.4
3.40
5.0
6.6
6.55
9.5
9.52
150
6
165.2
168.28
2.8
2.77
3.4
3.40
5.0
7.1
7.11
11.0
10.97
200
8
216.3
219.08
2.8
2.77
4.0
3.76
6.5
8.2
8.18
12.7
12.70
250
10
267.4
273.05
3.4
3.40
4.0
4.19
6.5
9.3
9.27
15.1
12.70
300
12
318.5
323.85
4.0
3.96
4.5
4.57
6.5
10.3
9.52
17.4
12.70
350
14
355.6
355.60
4.0
3.96
5.0
4.78
8.0
11.1
-
19.0
-
400
16
406.4
406.40
4.5
4.19
5.0
4.78
8.0
12.7
-
21.4
-
԰ : KS D3576, JIS G3459, ASTM A312