Kumar Wires & Conductors Pvt Ltd manufactures Countersunk Finishing Washer. Kumar Wires & Conductors Pvt Ltd is an ISO 9001:2000 awarded company. Kumar Wires & Conductors Pvt Ltd offers various types of compression springs, torsion springs, extension springs, flat springs, machining components etc. Countersunk Finishing Washer is a formed circular washers designed for use with flat or oval head screws. The smallest type of flat washers with an outside diameter equal to slightly twice the size of the inside diameter.