Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 10512228 found under Installer Bearing Cup by General Dynamics Land Systems. The National Stock Number assigned to this part is 5120011634837, and the Federal Supply Class is 5120 Hand Tools Nonedged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 10512228.