Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SS49PA815-4D28W found under Nipple Tube by Stevens Manufacturing Co Inc. The National Stock Number assigned to this part is 4730011641976, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SS49PA815-4D28W.