Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DB1-058-1 found under Flange Waveguide by Systron Donner Corp. The National Stock Number assigned to this part is 5985011865577, 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 DB1-058-1.