Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 240-3010612 found under Roller Linear Rotary Motion by Tracor Flight Systems Inc. The National Stock Number assigned to this part is 3120001857373, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 240-3010612.