Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RRN-145 found under Ring Retaining by Alturdyne. The National Stock Number assigned to this part is 5325011414056, 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 RRN-145.