Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W72-2-107 found under by Princetel Inc. The National Stock Number assigned to this part is 5977014928437, 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 W72-2-107.