Western CGA-701 Oxygen Hand Tight Regulator Nut has a thread size of 1.108" - 14 NGO with RH Female connection and is made of brass and has a pressure of 4000 - 5500 psig.
Caution
Safety First Western strongly encourages users of compressed gases to adhere to all safety guidelines and practices. Only an absolute and constant respect for compressed gases is acceptable for safe operations. Refer to the Western safety products such as check valves, flash arrestors, and relief valves.