Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B7300040 found under Outlet Boss by Premier Copper Division Of W And O. The National Stock Number assigned to this part is 4730014213461, 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 B7300040.