|
Inside Diameter
|
Inside Circumference
|
Sizes
|
|
MM
|
Inches
|
MM
|
Inches
|
British & Australian
|
US & Canada
|
French & Russian
|
German
|
Japanese
|
Swiss
|
|
9.91
|
0.390
|
31.13
|
1.22
|
-
|
0000
|
-
|
-
|
-
|
-
|
|
10.72
|
0.442
|
33.68
|
1.39
|
-
|
00
|
-
|
-
|
-
|
-
|
|
11.53
|
0.454
|
36.22
|
1.43
|
-
|
0
|
-
|
-
|
-
|
-
|
|
11.95
|
0.474
|
37.54
|
1.49
|
A
|
1/2
|
-
|
-
|
-
|
-
|
|
12.18
|
0.482
|
38.26
|
1.51
|
A 1/2
|
3/4
|
-
|
-
|
-
|
-
|
|
12.37
|
0.487
|
38.86
|
1.53
|
B
|
1
|
-
|
-
|
1
|
-
|
|
12.60
|
0.496
|
39.58
|
1.56
|
B 1/2
|
1 1/4
|
-
|
-
|
-
|
-
|
|
12.78
|
0.503
|
40.15
|
1.58
|
C
|
1 1/2
|
-
|
-
|
-
|
-
|
|
13.00
|
0.512
|
40.84
|
1.61
|
C 1/2
|
1 3/4
|
-
|
-
|
-
|
-
|
|
13.21
|
0.520
|
41.50
|
1.63
|
D
|
2
|
41 1/2
|
13 1/2
|
2
|
1 1/2
|
|
13.41
|
0.528
|
42.13
|
1.66
|
D 1/2
|
2 1/4
|
-
|
-
|
-
|
-
|
|
13.61
|
0.536
|
42.76
|
1.68
|
E
|
2 1/2
|
42 3/4
|
13 3/4
|
3
|
2 3/4
|
|
13.83
|
0.544
|
43.45
|
1.71
|
E 1/2
|
2 3/4
|
-
|
-
|
-
|
-
|
|
14.05
|
0.553
|
44.14
|
1.74
|
F
|
3
|
44
|
14
|
4
|
4
|
|
14.15
|
0.557
|
44.45
|
1.75
|
F 1/2
|
3 1/8
|
-
|
-
|
-
|
-
|
|
14.25
|
0.561
|
44.77
|
1.76
|
F 3/4
|
3 1/4
|
-
|
-
|
-
|
-
|
|
14.36
|
0.565
|
45.11
|
1.77
|
G
|
3 3/8
|
45 1/4
|
-
|
5
|
5 1/4
|
|
14.45
|
0.569
|
45.40
|
1.79
|
G 1/4
|
3 1/2
|
-
|
14 1/2
|
-
|
-
|
|
14.56
|
0.573
|
45.74
|
1.80
|
G 1/2
|
3 5/8
|
-
|
-
|
6
|
-
|
|
14.65
|
0.577
|
46.02
|
1.81
|
H
|
3 3/4
|
46 1/2
|
-
|
-
|
6 1/2
|
|
14.86
|
0.585
|
46.68
|
1.84
|
H 1/2
|
4
|
-
|
15
|
7
|
-
|
|
15.04
|
0.592
|
47.25
|
1.86
|
I
|
4 1/4
|
47 3/4
|
-
|
-
|
7 3/4
|
|
15.27
|
0.601
|
47.97
|
1.89
|
I 1/2
|
4 1/2
|
-
|
15 1/4
|
8
|
-
|
|
15.40
|
0.606
|
48.38
|
1.90
|
J
|
4 5/8
|
49
|
15 1/2
|
-
|
9
|
|
15.53
|
0.611
|
48.79
|
1.92
|
J 1/4
|
4 3/4
|
-
|
-
|
-
|
-
|
|
15.70
|
0.618
|
49.32
|
1.94
|
J 1/2
|
5
|
-
|
15 3/4
|
9
|
-
|
|
15.80
|
0.622
|
49.64
|
1.95
|
K
|
5 1/8
|
50
|
-
|
-
|
10
|
|
15.90
|
0.626
|
49.95
|
1.97
|
K 1/4
|
5 1/4
|
-
|
-
|
-
|
-
|
|
16.00
|
0.630
|
50.27
|
1.98
|
K 1/2
|
5 3/8
|
-
|
-
|
10
|
-
|
|
16.10
|
0.634
|
50.58
|
1.99
|
L
|
5 1/2
|
51 3/4
|
16
|
-
|
11 3/4
|
|
16.30
|
0.642
|
51.21
|
2.02
|
L 1/4
|
5 3/4
|
-
|
-
|
-
|
-
|
|
16.41
|
0.646
|
51.55
|
2.03
|
L 1/2
|
5 7/8
|
-
|
-
|
-
|
-
|
|
16.51
|
0.650
|
51.87
|
2.04
|
M
|
6
|
52 3/4
|
16 1/2
|
12
|
12 3/4
|
|
16.71
|
0.658
|
52.50
|
2.07
|
M 1/2
|
6 1/4
|
-
|
-
|
-
|
-
|
|
16.92
|
0.666
|
53.16
|
2.09
|
N
|
6 1/2
|
54
|
17
|
13
|
14
|
|
17.13
|
0.674
|
53.82
|
2.12
|
N 1/2
|
6 3/4
|
-
|
-
|
-
|
-
|
|
17.35
|
0.683
|
54.51
|
2.15
|
O
|
7
|
55 1/4
|
17 1/4
|
14
|
15 1/4
|
|
17.45
|
0.687
|
54.82
|
2.16
|
O 1/2
|
7 1/4
|
-
|
-
|
-
|
-
|
|
17.75
|
0.699
|
55.76
|
2.20
|
P
|
7 1/2
|
56 1/2
|
17 3/4
|
15
|
16 1/2
|
|
17.97
|
0.707
|
56.45
|
2.22
|
P 1/2
|
7 3/4
|
-
|
-
|
-
|
-
|
|
18.19
|
0.716
|
57.15
|
2.25
|
Q
|
8
|
57 3/4
|
18
|
16
|
17 3/4
|
|
18.35
|
0.722
|
57.65
|
2.27
|
Q 1/2
|
8 1/4
|
-
|
-
|
-
|
-
|
|
18.53
|
0.729
|
58.21
|
2.29
|
Q 3/4
|
8 1/2
|
-
|
18 1/2
|
17
|
-
|
|
18.61
|
0.733
|
58.47
|
2.30
|
R
|
8 5/8
|
59
|
-
|
-
|
19
|
|
18.69
|
0.736
|
58.72
|
2.31
|
R 1/4
|
8 3/4
|
-
|
-
|
-
|
-
|
|
18.80
|
0.740
|
59.06
|
2.32
|
R 1/2
|
8 7/8
|
-
|
-
|
-
|
-
|
|
18.89
|
0.748
|
59.34
|
2.35
|
R 3/4
|
9
|
-
|
19
|
18
|
-
|
|
19.10
|
0.752
|
60.00
|
2.36
|
S
|
9 1/8
|
60 1/4
|
-
|
-
|
20 1/4
|
|
19.22
|
0.757
|
60.38
|
2.38
|
S 1/4
|
9 1/4
|
-
|
-
|
-
|
-
|
|
19.31
|
0.760
|
60.66
|
2.39
|
S 1/2
|
9 3/8
|
-
|
-
|
-
|
-
|
|
19.41
|
0.764
|
60.98
|
2.40
|
S 3/4
|
9 1/2
|
-
|
19 1/2
|
19
|
-
|
|
19.51
|
0.768
|
61.29
|
2.41
|
T
|
9 5/8
|
61 1/2
|
-
|
-
|
21 1/2
|
|
19.62
|
0.772
|
61.64
|
2.43
|
T 1/4
|
9 3/4
|
-
|
-
|
-
|
-
|
|
19.84
|
0.781
|
62.33
|
2.45
|
T 1/2
|
10
|
-
|
20
|
20
|
-
|
|
20.02
|
0.788
|
62.89
|
2.48
|
U
|
10 1/4
|
62 3/4
|
-
|
21
|
22 3/4
|
|
20.20
|
0.797
|
63.46
|
2.50
|
U 1/2
|
10 1/2
|
-
|
20 1/4
|
22
|
-
|
|
20.32
|
0.800
|
63.84
|
2.51
|
V
|
10 5/8
|
63
|
-
|
-
|
23 3/4
|
|
20.44
|
0.805
|
64.21
|
2.53
|
V 1/4
|
10 3/4
|
-
|
-
|
-
|
-
|
|
20.68
|
0.814
|
64.97
|
2.56
|
V 1/2
|
11
|
-
|
20 3/4
|
23
|
-
|
|
20.76
|
0.817
|
65.22
|
2.57
|
W
|
11 1/8
|
65
|
-
|
-
|
25
|
|
20.85
|
0.821
|
65.50
|
2.58
|
W 1/4
|
11 1/4
|
-
|
-
|
-
|
-
|
|
20.94
|
0.824
|
65.78
|
2.59
|
W 1/2
|
11 3/8
|
-
|
-
|
-
|
-
|
|
21.08
|
0.830
|
66.22
|
2.61
|
W 3/4
|
11 1/2
|
-
|
21
|
24
|
-
|
|
21.18
|
0.834
|
66.54
|
2.62
|
X
|
11 5/8
|
66 1/4
|
-
|
-
|
26 1/4
|
|
21.24
|
0.836
|
66.73
|
2.63
|
X 1/4
|
11 3/4
|
-
|
-
|
-
|
-
|
|
21.30
|
0.839
|
66.92
|
2.64
|
X 1/2
|
11 7/8
|
-
|
-
|
-
|
-
|
|
21.49
|
0.846
|
67.51
|
2.66
|
Y
|
12
|
67 1/2
|
21 1/4
|
25
|
27 1/2
|
|
21.69
|
0.854
|
68.14
|
2.68
|
Y 1/2
|
12 1/4
|
-
|
-
|
-
|
-
|
|
21.89
|
0.862
|
68.77
|
2.71
|
Z
|
12 1/2
|
68 3/4
|
21 3/4
|
26
|
28 3/4
|
|
22.10
|
0.870
|
69.43
|
2.73
|
Z +1/2
|
12 3/4
|
-
|
-
|
-
|
-
|
|
22.33
|
0.879
|
70.15
|
2.76
|
Z+1
|
13
|
-
|
22
|
27
|
-
|
|
22.60
|
0.890
|
71.00
|
2.80
|
Z+1.5
|
13.5
|
-
|
-
|
-
|
-
|
|
22.69
|
0.893
|
71.28
|
2.81
|
Z+2
|
-
|
-
|
-
|
-
|
-
|
|
22.92
|
0.902
|
72.00
|
2.83
|
Z+2.5
|
-
|
-
|
-
|
-
|
-
|
|
23.06
|
0.908
|
72.45
|
2.85
|
Z+3
|
-
|
-
|
-
|
-
|
-
|
|
23.24
|
0.915
|
73.01
|
2.87
|
Z+3.5
|
-
|
-
|
-
|
-
|
-
|
|
23.47
|
0.924
|
73.73
|
2.90
|
Z+4
|
-
|
-
|
-
|
-
|
-
|
|
23.55
|
0.927
|
73.98
|
2.91
|
Z+4.5
|
-
|
-
|
-
|
-
|
-
|
|
23.87
|
0.940
|
74.99
|
2.95
|
Z+5
|
-
|
-
|
-
|
-
|
-
|
|
24.27
|
0.956
|
76.25
|
3.00
|
Z+6
|
-
|
-
|
-
|
-
|
-
|
|
