Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 22143 found under Holder Electrical C by Electric Machinery Dresser Indus. The National Stock Number assigned to this part is 5977003744583, 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 22143.