Brass Tube Fitting Brass Tube Adapter Brass Flare Tube Fitting Coupling - 3/8 Male Flare X 1/4 Female NPT Thread (2 Pack) Pipe Thread Tape Brass Flare Fitting For Fuel Line Gas Our brass tube fitting is durable and long use life . Instructions for use : NPT thread is used to connect internal thread pipes. Size 3/8" Flare x 1/4" NPT Male. Thread Type NPT. Connector Type Union. Suitable for aluminum,steel pipe,copper,brass or plastic pipe This pipe fitting is precisely milled, threads are tighter, deeper, smoother than regular products, making work easier and more efficient . LTWFITTING Brass Flare 5/8 OD x 3/4 ale NPT Connector Tube Fitting... Premium solid brass material for corrosion resistance, high temperature ductility and low magnetic permeability. Aazon.co: (3PCS) 3/8 Flare to 3/8 NPT ale Brass Tube Fitting, Flare Suitable for aluminum,steel pipe,copper,brass or plastic pipe .