Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ZC8-28-021-1 found under Roller Linear Rotary Motion by Aidc Aerospace Industrial. The National Stock Number assigned to this part is 3120014586585, 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 ZC8-28-021-1.