Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2021L found under Antenna by Adatum Inc. The National Stock Number assigned to this part is 5985010730249, 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 2021L.