Used on 2330-01-508-7887, trailer,flat bed. 14 1st end thread quantity per inch hexagon reducer nipple, automotive pipe fittings swaged nptf 2nd end thread series
Used on 2350-01-328-5964 tank,combat,full tracked. stainless steel pipe fittings bushing (male x female hex) npt x npt, 3/4" reduced to 1/2", max pressure 72 f equal to 150psi, type 316 stainless steel
tube end reducer length is 1.630 inch; male thread end is 0.562-18 unf-2a, female thread end is 0.750-16 unf-2b passivate surface treated unf 2nd end thread series