Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R4G-2 found under Ring Retaining by Zodiac Aero Electric. The National Stock Number assigned to this part is 5325013861979, 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 R4G-2.