Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 561R254H02 found under Attenuator Fixed by Component General Inc. The National Stock Number assigned to this part is 5985016309468, 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 561R254H02.