|
|
| U. S. and
Canada |
Diameter (Inches) |
Britain |
Japan |
France |
Germany |
Switzerland |
| 1 |
0.487 |
B |
1 |
• |
• |
• |
| 1 1/4 |
0.495 |
B 1/2 |
• |
• |
• |
• |
| 1 1/2 |
0.503 |
C |
• |
• |
• |
• |
| 1 3/4 |
0.511 |
C 1/2 |
• |
• |
• |
• |
| 2 |
0.520 |
D |
2 |
41 1/2 |
13
1/4 |
1
1/2 |
| 2 1/4 |
0.528 |
D 1/2 |
• |
42 1/8 |
13
1/2 |
2 1/8 |
| 2 1/2 |
0.536 |
E |
3 |
42 3/4 |
13
3/4 |
2
3/4 |
| 2 3/4 |
0.544 |
E 1/2 |
• |
43 3/8 |
• |
3
3/8 |
| 3 |
0.553 |
F |
4 |
44 |
14 |
4 |
| 3 1/4 |
0.561 |
F 1/2 |
• |
44 5/8 |
14
1/4 |
4
5/8 |
| 3 1/2 |
0.569 |
G |
5 |
45 1/4 |
14
1/2 |
5
1/4 |
| 3 3/4 |
0.577 |
G 1/2 |
6 |
45 7/8 |
14
3/4 |
5
7/8 |
| 4 |
0.586 |
H |
7 |
46 1/2 |
15 |
6
1/2 |
| 4 1/4 |
0.594 |
H 1/2 |
• |
47 1/8 |
15
1/4 |
7
1/8 |
| 4 1/2 |
0.602 |
I |
8 |
47 3/4 |
15
1/2 |
7
3/4 |
| 4 3/4 |
0.610 |
I 1/2 |
• |
48 3/8 |
• |
8
3/8 |
| 5 |
0.619 |
J |
9 |
49 |
15
3/4 |
9 |
| 5 1/4 |
0.627 |
J 1/2 |
• |
49 5/8 |
16 |
9
5/8 |
| 5 1/2 | 0.635 |
K |
10 |
50 1/4 |
16
1/4 |
10
1/4 |
| 5 3/4 |
0.643 | K 1/2 |
11 |
50 7/8 |
• |
10
7/8 |
| 6 |
0.652 |
L |
12 |
51 1/2 |
16
1/2 |
11
1/2 |
| 6 1/4 |
0.660 |
L 1/2 |
• |
52 1/8 | 16
3/4 |
12
1/8 |
| 6 1/2 |
0.668 |
M |
13 |
52 3/4 | 17 |
12
3/4 |
| 6 3/4 |
0.676 |
M 1/2 |
• |
53 3/8 |
• |
13
3/8 |
| 7 |
0.685 |
N |
14 |
54 |
17
1/4 |
14 |
| 7 1/4 |
0.693 |
N 1/2 |
• |
54 5/8 |
17
1/2 |
14
5/8 |
| 7 1/2 |
0.701 |
O |
15 |
55 1/4 |
17
3/4 |
15
1/4 |
| 7 3/4 |
0.709 |
O 1/2 |
• |
55 7/8 |
• |
15
7/8 |
| 8 |
0.717 |
P |
16 |
56 1/2 |
18 |
16
1/2 |
| 8 1/4 | 0.726 |
P 1/2 |
• |
57 1/8 |
18
1/4 |
17
1/8 |
| 8 1/2 | 0.734 |
Q |
17 |
57 3/4 |
18
1/2 |
17
3/4 |
| 8 3/4 |
0.742 | Q 1/2 |
• |
58 3/8 |
18
3/4 |
18
3/8 |
| 9 |
0.750 | R |
18 |
59 |
19 |
19 |
| 9 1/4 |
0.759 |
R 1/2 |
• |
59 5/8 |
19
1/4 |
19
5/8 |
| 9 1/2 |
0.767 |
S |
19 |
60 1/4 |
19
1/2 |
20
1/4 |
| 9 3/4 |
0.775 |
S 1/2 |
• |
60 7/8 | 19
3/4 |
20
7/8 |
| 10 |
0.783 |
T |
20 |
61 1/2 | 20 |
21
1/2 |
| 10 1/4 |
0.792 |
T 1/2 |
21 |
62 1/8 |
20
1/4 |
22
1/8 |
| 10 1/2 |
0.800 |
U |
22 |
62 3/4 |
20
1/2 |
22
3/4 |
| 10 3/4 |
0.808 |
U 1/2 |
• |
63 3/8 |
• |
23
3/8 |
| 11 |
0.816 |
V |
23 |
64 |
20
3/4 |
24 |
| 11 1/4 |
0.825 |
V 1/2 |
• |
64 5/8 |
• |
24
5/8 |
| 11 1/2 |
0.833 |
W |
24 |
65 1/4 |
21 |
25
1/4 |
| 11 3/4 | 0.841 |
W 1/2 |
• |
65 7/8 |
• |
25
7/8 |
| 12 | 0.849 |
X |
25 |
66 1/2 |
21
1/4 |
26
1/2 |
| 12 1/4 |
0.858 | X 1/2 |
• |
67 1/8 |
21
1/2 |
27
1/8 |
| 12 1/2 |
0.866 | Y |
26 |
67 3/4 |
21
3/4 |
27
3/4 |
| 12 3/4 |
0.874 |
Y 1/2 |
• |
68 3/8 |
• |
28
3/8 |
| 13 |
0.882 |
Z |
27 |
69 |
22 |
29 |
| U. S. and
Canada |
Diameter (Inches) |
Britain |
Japan |
France |
Germany |
Switzerland |
|
