Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C4217 found under Antenna Element by Electrometrics. The National Stock Number assigned to this part is 5985010910994, 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 C4217.