Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FS-200M-SB-19387 found under Switch Flow by Gems Sensors Inc. The National Stock Number assigned to this part is 5930000013205, 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 FS-200M-SB-19387.