Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MST3 found under Mast by Federal Div Of Victoreen Instrum. The National Stock Number assigned to this part is 5985000268849, 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 MST3.