Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 387-3402-603D found under Cover Access by Alliant Techsystems Operations Llc. The National Stock Number assigned to this part is 5340013937053, 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 387-3402-603D.