Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 48B20050 found under Adapter Straight Pipe To Boss by San Antonio Air Logistics Center. The National Stock Number assigned to this part is 4730001422543, 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 48B20050.