ISO 23429:2004

ISO 23429:2004 specifies gauges for hexagon sockets with tolerances as specified in ISO 4759-1.

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• mandatory clauses to satisfy,
• non-essential but useful clauses to know, such as permissions and recommendations.

The identification of these types of clauses is based on the document "ISO/IEC Directives, Part 2 - Principles and rules of structure and drafting of ISO documents" as well as on a constantly enriched list of verbal forms.

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