Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 74A321421-1045 found under Cover Access by Harris Llc. The National Stock Number assigned to this part is 5340011544766, 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 74A321421-1045.