ParkerHannifin EZ-371-6FP Series E-Z-Mate Steel Special Purpose Exhaust Venting Pneumatic Quick Coupler with Female Pipe Thread, 2.53" Length

We use theses for our high pressure nitrogen lines.

As far as I’m concerned this is the only female fitting that exists in my world is an automotive mechanic of 25 years! Trust me, buy one and you’ll never go back!