Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FE650-4000-002N found under Switch Thermostatic by Bae Systems Maritime Services. The National Stock Number assigned to this part is 5930013434749, 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 FE650-4000-002N.