Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S13T28 found under Isolator Radio Frequency Reflect by E And M Equipment Co. The National Stock Number assigned to this part is 5985002706936, 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 S13T28.