Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CA20028-1 found under Fastener by Alcoa Fastening Systems Ltd. The National Stock Number assigned to this part is 5325012421637, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CA20028-1.