BSP (British Standard Pipe) | ||||
PARALLEL | APPROX. TAPER | |||
Nominal Size | TPI (Threads per Inch) | Actual O.D. | Min. Diameter | Max. Diameter |
1/8'' | 28 | 0.377 | 0.337 | 0.406 |
1/4'' | 19 | 0.511 | 0.451 | 0.531 |
3/8'' | 19 | 0.648 | 0.598 | 0.687 |
1/2'' | 14 | 0.814 | 0.734 | 0.843 |
3/4'' | 14 | 1.03 | 0.95 | 1.062 |
1'' | 11 | 1.295 | 1.193 | 1.343 |
NPS/NPT (National Pipe Straight)/(National Pipe Taper) | ||||
PARALLEL | APPROX. TAPER | |||
Nominal Size | TPI (Threads per Inch) | Actual O.D. | Min. Diameter | Max. Diameter |
1/8'' | 27 | 0.405 | 0.393 | 0.405 |
1/4'' | 18 | 0.54 | 0.522 | 0.54 |
3/8'' | 18 | 0.675 | 0.656 | 0.675 |
1/2'' | 14 | 0.84 | 0.816 | 0.84 |
3/4'' | 14 | 1.05 | 1.025 | 1.05 |
1'' | 11.5 | 1.315 | 1.283 | 1.315 |
UNF (Unified National Fine) | |||
PARALLEL | |||
Nominal Size | TPI (Threads per Inch) | Major Diameter | Actual O.D. |
1/8'' | 28 | 5/16-24 | 0.312 |
3/16'' | 18 | 3/8-24 | 0.375 |
1/4'' | 19 | 7/16-20 | 0.437 |
5/16'' | 18 | 1/2-20 | 0.5 |
3/8'' | 19 | 9/16-18 | 0.562 |
1/2'' | 14 | 3/4-16 | 0.75 |
3/4'' | 14 | 1-1/16''-14 | 1.062 |
Gas Components Australia
17 Medway Street,
Rocklea QLD 4106
(07) 3255 9255
W.A (08) 6253 8822
S.A (07) 3255 9255
VIC (07) 3255 9255
NSW (07) 3255 9255
TAS (07) 3255 9255
N.T (08) 6253 8822