Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AAC5273K found under Clamp Hose by United Air Filter Company. The National Stock Number assigned to this part is 4730002782069, 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 AAC5273K.