Historical
ISO 7043:1997
Prevailing torque type hexagon nuts with flange (with non-metallic insert) - Product grades A and B
This International Standard specifies the characteristics of prevailing torque type hexagon nuts with flange (with non-metallic insert) with threads from M5 to M20 inclusive, in product grade A for threads up to and including M16 and product grade B for threads above M16, and with property classes 8, 9 and 10.
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.
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International Organization for Standardization [iso]
International Organization for Standardization [iso]