Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C20020ADN found under Coupling Body Tube by Eastern Aero Supply Inc. The National Stock Number assigned to this part is 4730011698772, 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 C20020ADN.