Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D20-08704 found under Coupling Pipe by Portland Valve Llc. The National Stock Number assigned to this part is 4730012453280, 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 D20-08704.