Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RNG1688 found under Ring Retaining by Worthington Compressors Inc. The National Stock Number assigned to this part is 5325009376492, 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 RNG1688.