Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8163 found under Wheel Abrasive by Dremel Mfg Co. The National Stock Number assigned to this part is 5130011045335, and the Federal Supply Class is 5130 Hand Tools Power Driven. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 8163.