Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 305-WBB found under Coupler Rotary Radio Frequency by Spectrum Microwave Inc Div Spec. The National Stock Number assigned to this part is 5985011271989, 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 305-WBB.