Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 408 4 50987 005 found under Switch Thermostatic by G E C Marconi S3i Ltd. The National Stock Number assigned to this part is 5930013711740, 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 005.