Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B52-870 found under Tube Bent Metallic by Engineered Electric Company. The National Stock Number assigned to this part is 4710007580089, and the Federal Supply Class is 4710 Pipe Tube And Rigid Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B52-870.