Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 491AN3216-1 found under Switch Foot by Nds Inc. The National Stock Number assigned to this part is 5930008181641, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 491AN3216-1.