Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5021-838 found under Suppressor Parasitic by Raytheon Company. The National Stock Number assigned to this part is 5915007985618, and the Federal Supply Class is 5915 Filters And Networks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5021-838.