Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 685-5616-002 found under Shield Expansion by Marvel Oil Co Inc. The National Stock Number assigned to this part is 5340013680982, 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 685-5616-002.