Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 115-5-4 found under Coupling Clamp Pipe by United Corp The. The National Stock Number assigned to this part is 4730007354368, 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 115-5-4.