Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1K4-1A found under Filter Radio Frequency Interference by Corcom Inc. The National Stock Number assigned to this part is 5915010780322, 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 1K4-1A.