Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1X1661 found under Ring Retaining by Link Belt Construction Equipment. The National Stock Number assigned to this part is 5325011975272, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1X1661.