Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8C-8522 found under Fastener Pawl by Caterpillar Inc. The National Stock Number assigned to this part is 5340015240597, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 8C-8522.