Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 408 4 50987 003 found under Switch Thermostatic by Bae Systems Maritime Services. The National Stock Number assigned to this part is 5930013711288, 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 408 4 50987 003.