Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B2TW-PHBR50 found under by Roxspur Measurement And Control. The National Stock Number assigned to this part is 4730013486108, 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 B2TW-PHBR50.