Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GB520ES24 found under Bearing Plain Self Aligning by New Hampshire Ball Bearings Inc. The National Stock Number assigned to this part is 3120007652030, 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 GB520ES24.