Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4-5004-22 found under Skin Aircraft by Pratt And Whitney H A C Inc. The National Stock Number assigned to this part is 1560016492755, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4-5004-22.