Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number STSPB312W1006 found under Reducer Tube by B And E Manufacturing Co Inc. The National Stock Number assigned to this part is 4730002410633, 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 STSPB312W1006.