Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 600K0R9 found under Cord Fibrous by Western Filament Inc. The National Stock Number assigned to this part is 4020015057178, and the Federal Supply Class is 4020 Fiber Rope Cordage And Twine. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 600K0R9.