Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3A MED 3X3 4X1 4 UNITIZED found under Wheel Abrasive by 3M Company. The National Stock Number assigned to this part is 3460010509703, and the Federal Supply Class is 3460 Machine Tool Accessories. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3A MED 3X3 4X1 4 UNITIZED.