Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12A4101 ITEM 1 found under Cover Access by Westinghouse Electric Corp. The National Stock Number assigned to this part is 5340011971920, 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 12A4101 ITEM 1.