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standard by International Organization for Standardization, 11/01/1997
This International Standard specifies the characteristics of prevailing torque type hexagon thin nuts (with non-metallic insert) with thread from M3 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 04 and 05.
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.