ISO 7042:2012 PDF Download

This standard essentially defines the specifications and properties of a specific type of nut known as "prevailing torque type all-metal hexagon high nuts". These nuts have a hexagonal shape and are designed to have a prevailing torque feature that provides resistance against loosening due to vibration or other external forces. ISO 7042 also establishes specific requirements for the threads of these nuts, which range in size from M5 to M36, and distinguishes between product grades A and B, depending on the size of the threads. Lastly, the standard defines different property classes (5, 8, 10, and 12), each of which denotes the strength and hardness of the nut.