Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RNS21 found under Roller Bearing by Gaylord Industries Inc. The National Stock Number assigned to this part is 3110010483292, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RNS21.