.Steel Hex Headless Plug 3/8 Inch NPT Male, PK 25 These Steel Headless plugs are manufactured with threads that confirm to the American standard taper pipe thread and have a good resistance to vibration and pipe movement.
.3/4 Inch GHT Female x 3/8 Inch Male NPT Hose Fitting - Swivel Thicker walls provide professional level strength. Interstate Pneumatics FGF106 3/4" GHT Female x 3/8" Male NPT Hose Fitting.