Northern Screw Machine is a company that specializes in precision screw machine products. It offers custom screw machine parts from round, square, hexagonal, and rectangular bar stock in various materials including steel, stainless steel, aluminum, brass, copper, bronze, nylon, etc. The company also provides drilling, tapping, milling, deburring, passivation, plating, annealing, heat treating, grinding, broaching, painting, etching, and other services.