Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WR1-760-3031 found under Bend Tube Return by Firestone Industrial Products Co Div. The National Stock Number assigned to this part is 4730016217668, 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 WR1-760-3031.