Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S22-1-FIS SF found under Switch Radio Frequency Transmiss by Microwave Communications. The National Stock Number assigned to this part is 5985015494411, and the Federal Supply Class is 5985 Antennas Waveguides And Related Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S22-1-FIS SF.