Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5322 501 50018 found under Cock Drain by Philips Nederland Afd Pso. The National Stock Number assigned to this part is 4820012971908, 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 5322 501 50018.