Historical
ISO 7042:1997
Prevailing torque type all-metal hexagon nuts, style 2 - Property classes 5, 8, 10 and 12
This International Standard specifies the characteristics of prevailing torque type all-metal hexagon nuts, style 2, with threads from M5 up to and including M36, in product grade A for threads up to and including Ml6 and product grade B for threads above M16, and with property classes 5,8,10 and 12.
If other specifications are required, they should be selected from existing International Standards, for example ISO 261, ISO 965-2, ISO 2320 and ISO 4759-1.
International Organization for Standardization [iso]