NZ, Australia, UK | USA, Canada | Asia | Europe | Inside Diameter (mm) |
---|
A | ½ | – | – | 12.04 |
A ½ | ¾ | – | – | 12.24 |
B | 1 | 1 | – | 12.37 |
B ½ | 1 ¼ | – | – | 12.65 |
C | 1 ½ | – | – | 12.85 |
C ½ | 1 ¾ | – | – | 13.06 |
D | 2 | 2 | 1 ½ | 13.26 |
D ½ | 2 ¼ | – | – | 13.46 |
E | 2 ½ | 3 | 2 ¾ | 13.66 |
E ½ | 2 ¾ | – | – | 13.87 |
F | 3 | 4 | 3 | 14.07 |
F ½ | 3 1/8 | – | – | 14.17 |
G | 3 3/8 | 5 | 5 ¼ | 14.38 |
G ½ | 3 5/8 | 6 | – | 14.58 |
H | 3 ¾ | – | 6 ½ | 14.68 |
H ½ | 4 | 7 | – | 14.88 |
I | 4 ¼ | – | 7 ¾ | 15.09 |
I ½ | 4 ½ | 8 | – | 15.29 |
J | 4 5/8 | – | 9 | 15.39 |
J ½ | 5 | 9 | – | 15.7 |
K | 5 1/8 | – | 10 | 15.8 |
L | 5 ½ | – | 11 ¾ | 16.1 |
L ½ | 5 7/8 | – | – | 16.41 |
M | 6 | 12 | 12 ¾ | 16.51 |
M ½ | 6 ¼ | – | – | 16.71 |
N | 6 ½ | 13 | 14 | 16.92 |
N ½ | 6 ¾ | – | – | 17.12 |
O | 7 | 14 | 15 ¼ | 17.32 |
O ½ | 7 ¼ | – | – | 17.53 |
P | 7 ½ | 15 | 16 ½ | 17.73 |
P ½ | 7 ¾ | – | – | 17.93 |
Q | 8 | 16 | 17 ¾ | 18.13 |
Q ½ | 8 ¼ | – | – | 18.34 |
R | 8 5/8 | – | 19 | 18.64 |
R ½ | 8 7/8 | – | – | 18.85 |
S | 9 1/8 | – | 20 ¼ | 19.05 |
S ½ | 9 3/8 | – | – | 19.25 |
T | 9 5/8 | – | 21 ½ | 19.46 |
T ½ | 10 | 20 | – | 19.76 |
U | 10 ¼ | 21 | 22 ¾ | 19.96 |
U ½ | 10 ½ | 22 | – | 20.17 |
V | 10 5/8 | – | 23 ¾ | 20.27 |
V ½ | 11 | 23 | – | 20.57 |
W | 11 1/8 | – | 25 | 20.67 |
W ½ | 11 3/8 | – | – | 20.88 |
X | 11 5/8 | – | 26 ¼ | 21.08 |
X ½ | 11 7/8 | – | – | 21.28 |
Y | 12 | 25 | 27 ½ | 21.39 |
Y ½ | 12 ¼ | – | – | 21.59 |
Z | 12 ½ | 26 | 28 ¾ | 21.79 |
Z ½ | 12 ¾ | – | – | 22 |