The Pioneer 10 Metric Hex Nut #442405-50 C3.31.06.2.3 is a high-quality fastener nut manufactured by Pioneer Inc. in the USA. This hex nut is designed with a metric system of measurement, making it compatible with a wide range of applications. Sold individually, this nut is part of the Pioneer 442405-50 C3 .31.06.2.3 model, ensuring reliable performance and durability for various industrial and commercial projects.