AN Thread Sizes | NPT Thread Sizes | |||
AN Size | Tube Size | Thread | Pipe Size | Threads/Inch |
– 2 | 1/8″ | 5/16 – 24 | 1/16 | 27 |
– 3 | 3/16″ | 3/8 – 24 | 1/8 | 27 |
– 4 | 1/4″ | 7/16 – 20 | 1/4 | 18 |
– 5 | 5/16″ | 1/2 – 20 | 3/8 | 18 |
– 6 | 3/8″ | 9/16 – 18 | 1/2 | 14 |
– 8 | 1/2″ | 3/4 – 16 | 3/4 | 14 |
– 10 | 5/8″ | 7/8 – 14 | 1 | 11 1/2 |
– 12 | 3/4″ | 1 1/16 – 12 | 1 1/4 | 11 1/2 |
– 16 | 1″ | 1 5/16 – 12 | 1 1/2 | 11 1/2 |
– 20 | 1 1/4″ | 1 5/8 – 12 | 2 | 11 1/2 |
– 24 | 1 1/2″ | 1 7/8 – 12 | ||
– 28 | 1 3/4″ | 2 1/4 – 12 | ||
– 32 | 2″ | 2 1/2 – 12 | ||
Tube size is indicated in 1/16″ Examples: 1AN = 1/16″ 4AN = 4/16″ = 1/4″ 6AN = 6/16″ = 3/8″ |