Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EPA21000-273 found under Nut Union by Dcns Services Brest. The National Stock Number assigned to this part is 4730009016287, 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 EPA21000-273.