
| DIAMETER (mm) | AUSTRALIA | USA | EUROPE |
| 14.1 | F | 3 | 44 |
| 14.3 | F 1/2 | 45 | |
| 14.5 | G | 3 1/2 | |
| 14.7 | G 1/2 | 46 | |
| 14.9 | H | 4 | 47 |
| 15.1 | H 1/2 | ||
| 15.3 | I | 4 1/2 | 48 |
| 15.5 | I 1/2 | ||
| 15.7 | J | 5 | 59 |
| 15.9 | J 1/2 | 50 | |
| 16.1 | K | 5 1/2 | |
| 16.3 | K 1/2 | 51 | |
| 16.5 | L | 6 | 52 |
| 16.7 | L 1/2 | ||
| 16.9 | M | 6 1/2 | 53 |
| 17.1 | M 1/2 | ||
| 17.3 | N | 7 | 54 |
| 17.5 | N 1/2 | 55 | |
| 17.7 | O | 7 1/2 | |
| 17.9 | O 1/2 | 56 | |
| 18.1 | P | 8 | 57 |
| 18.3 | P 1/2 | ||
| 18.5 | Q | 8 1/2 | 58 |
| 18.7 | Q 1/2 | ||
| 18.9 | R | 9 | 59 |
| 19.1 | R 1/2 | 60 | |
| 19.3 | S | 9 1/2 | 61 |
| 19.5 | S 1/2 | ||
| 19.7 | T | 10 | 62 |
| 19.9 | T 1/2 | 63 | |
| 20.1 | U | 10 1/2 | |
| 20.3 | U 1/2 | 64 | |
| 20.5 | V | 11 | 65 |
| 20.7 | V 1/2 | ||
| 20.9 | W | 11 1/2 | 66 |
| 21.1 | W 1/2 | ||
| 21.3 | X | 12 | 67 |
| 21.5 | X 1/2 | ||
| 21.7 | Y | 12 1/2 | 68 |
| 21.9 | Y 1/2 | 69 | |
| 22.1 | Z | 13 | 70 |