Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 66564 found under Rope Fibrous by Gregory Inc. The National Stock Number assigned to this part is 4020001074128, 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 66564.