Nipple, Application Air, Fitting Compatibility Schedule 40, Inside Diameter 4 3/64 in, Material Aluminum, Material Grade 6063-T6, Maximum Operating Pressure 125 psi @ 72 Degrees F, Metal Pipe Construction Seamless, Nominal Pipe Size 4 in, Outside Diameter 4 1/2 in, Overall Length 2 7/8 in, Resistance Properties Corrosion-Resistant, Schedule Schedule 40, Side A Connection Type Close Thread, Side A Gender Male, Side A Thread Type NPT, Side B Connection Type Close Thread, Side B Gender Male