Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AT1A-2427 REV D ITEM 2 found under Bumper by Accutemp Products Inc. The National Stock Number assigned to this part is 5340016421847, 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 AT1A-2427 REV D ITEM 2.