hose adapter, 3/8 inch adapter type: male pipe adapter; flare angle: 37 deg; material detail: forged or bar stock 12L14 carbon steel with a zinc-plated finish; for outside tube diameter: 1/2 inch; nut/tube end thread: nptf; pipe size: 3/8 inch; max pressure: 4000 psi at 72 deg f; vacuum rating: 28 in hg at 72 deg f; operating temperature range: -63 deg to plus 400 deg f; tubing compatibilty note: use with flareable welded or seamless steel tubing; sae specification: sae J514