ISO/NP 6789-3

Assembly tools for screws and nuts — Hand torque tools — Requirements and test methods for design conformance testing, quality conformance testing and recalibration procedure — Part 3: Requirements and methods for interim checking ISO/NP 6789-3

Scope

This document specifies the minimum requirements for interim checking of the torque output of hand torque tools used for controlled tightening of screws and nuts.
This document applies to hand torque tools which are classified as indicating torque tools (Type I) and setting torque tools (Type II).
This document does not specify requirements of calibration certificates for hand torque tools. These are described in ISO 6789-2.