Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 66623318978 found under Diskabrasive by Norton Company Inc. The National Stock Number assigned to this part is 5345016958900, and the Federal Supply Class is 5345 Disks And Stones Abrasive. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 66623318978.