Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AIRCHEK 52 PUMP KITS found under Air Sampling Pump Kit by Skc Inc. The National Stock Number assigned to this part is 6665015428383, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AIRCHEK 52 PUMP KITS.