Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1RR45CF-6-1-2-500K found under by Gk Engineering Corp. The National Stock Number assigned to this part is 6635014399032, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1RR45CF-6-1-2-500K.