Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AAC5273N found under Clamp Hose by United Specialties Co. The National Stock Number assigned to this part is 4730002000231, 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 AAC5273N.