NITTOSEIKO (日東精工株式会社) is a company that develops and manufactures products based on fastening, assembly, measurement, and inspection technology. It offers screw products, such as precision, loose-proof screws, special cold forged parts, etc. The company also provides automated assembly systems, including screwdrivers, automatic screw driving machines, and screw driving robots, as well as inspection equipment comprising flowmeters, measuring and instrumentation systems, and other related products.