NF ISO 3317
Assembly tools for screws and nuts. Square drive extension hexagon insert, for power socket wrenches.
La présente norme fixe les dimensions des adaptateurs à carré mâle avec entraînement hexagone mâle, pour douilles machines, repérés dans la nomenclature de la norme NF E 74-380 sous le numéro 402, ainsi que la dûreté des cars et des hexagones conducteurs. Les carrés conducteurs et hexagones conducteurs sont respectivement conformes aux normes NF E 74-362 et NF E 74-360.
ISO 3317:2009 prescribes the technical specifications for square drive adaptor hexagon or cylindrical flat inserts for power socket wrenches. It applies to square drive adaptors with hexagon drive or with cylindrical flat end drive as defined in ISO 1173, and to driving squares for power socket wrenches as defined in ISO 1174-2.
The Requirements department helps you quickly locate within the normative text:
- 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.
With Requirements, quickly access the main part of the normative text!

COBAZ is the simple and effective solution to meet the normative needs related to your activity, in France and abroad.
Available by subscription, CObaz is THE modular solution to compose according to your needs today and tomorrow. Quickly discover CObaz!
Request your free, no-obligation live demo
I discover COBAZ