Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 522 1 found under Cable Assembly Hand by Transdigm Inc. The National Stock Number assigned to this part is 2590008889398, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 522 1.