Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number L20T73 found under Isolator Radio Freq by E And M Equipment Co. The National Stock Number assigned to this part is 5985010292404, 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 L20T73.