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| Definition of pipe thread acronyms | |
| NPT | National Pipe Thread (tapered) |
| FPT | Female Pipe Thread (interchangeable with NPT) |
| FIP | Female Iron Pipe (interchangeable with NPT) |
| MPT | Male Pipe Thread (interchangeable with NPT) |
| MIP | Male Iron Pipe (interchangeable with NPT) |
| IPS | Iron pipe size (interchangeable with NPT) |
| PTF | SAE short taper pipe thread |
| NPTF | National Pipe Thread Fuel (American National taper pipe thread for dryseal pressure-tight joints) |
| NPSM | National Pipe Straight Mechanical (American National straight pipe thread for mechanical joints) |
| NPSI | American National straight intermediate pipe thread |
| GHT | Garden Hose thread |
| NST | National Standard Thread (Fire Hose thread) |
| BSPT | British Standard taper pipe thread (metric dimensions) |
