Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AIR48542 found under Valve Assembly by U S Dept Of Transportation Federal. The National Stock Number assigned to this part is 4820013624438, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AIR48542.