This hex nut with pipe thread is manufactured to DIN 431-B standards and is widely used throughout the machine building industry. It features a single-sided chamfer and a cylindrical pipe thread. Made from steel, the nut has a hardness class of 14H, indicating a minimum hardness of 140 HV. No proof load is specified for this hardness class. The nut is electro-galvanized, making it suitable for indoor applications or environments with very mild exposure.