Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FS0215A101-18 found under Coupling Reducer by General Steel Tank Co. The National Stock Number assigned to this part is 4730001388188, 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 FS0215A101-18.