
Deciphering air fittings and coupler standards | Helping you work smarter not …
3/5/2019· Most air tools in North America have 1/4″ NPT threads in the tool. North American Air hoses can be purchased in these main sizes: 1/4 hose size with 1/4 NPT male fittings 3/8 hose size with 1/4 NPT male fittings 3/8 hose size with 3/8 NPT male fittings 1/2 1/2