Assembly tools for screws and nuts; Machine- and hand-operated square drive sockets; Metric series

This international specification outlines the technical requirements for tools designed to assemble screws and nuts. It specifically addresses manual and powered driving tools featuring square drive sockets, conforming to the metric system dimensions. The document establishes precise geometric tolerances and dimensional consistency to ensure compatibility between various manufacturers' tools and standard fasteners. By defining uniform characteristics for these driving interfaces, the text facilitates seamless interchangeability in industrial and mechanical assembly processes worldwide. The scope encompasses the functional design parameters necessary for reliable torque transmission and tool engagement. Adherence to these defined specifications enables efficient operations across diverse sectors utilizing metric fastening systems. The guidelines serve as a foundational reference for quality control and product development within the manufacturing environment, promoting standardization in tooling practices.