Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P1522 found under Disc Carbon by Snap On Tools Corp. The National Stock Number assigned to this part is 5977003567775, and the Federal Supply Class is 5977 Electrical Contact Brushes And Electrodes. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like P1522.