INSIDE DIAMETER SIZES
|
INCH |
MM |
USA & Canada |
United Kingdom & Australia |
|
0.618 |
15.7 |
5 |
J½ |
|
0.634 |
16.1 |
5½ |
K½ |
|
0.65 |
16.51 |
6 |
L½ |
|
0.666 |
16.92 |
6½ |
M½ |
|
0.682 |
17.32 |
7 |
N½ |
|
0.698 |
17.73 |
7½ |
O½ |
|
0.714 |
18.14 |
8 |
P½ |
|
0.73 |
18.54 |
8½ |
Q½ |
|
0.746 |
18.95 |
9 |
R½ |
|
0.762 |
19.35 |
9½ |
S½ |
|
0.778 |
19.76 |
10 |
T½ |
|
0.794 |
20.17 |
10½ |
U½ |
|
0.81 |
20.57 |
11 |
V½ |
|
0.826 |
20.98 |
11½ |
W½ |
|
0.842 |
21.39 |
12 |
X½ |
|
0.858 |
21.79 |
12½ |
Y½ |
|
0.874 |
22.2 |
13 |
Z½ |