prEN ISO 6789-2
Assembly tools for screws and nuts - Hand torque tools - Part 2: Requirements for calibration and determination of measurement uncertainty (ISO/DIS 6789-2:2025)
Draft NewProject stage codes
1. Decision on WI Proposal
2. Projektas
3. Viešoji apklausa
From 2025-07-04
till 2025-09-02
4. Closure of enquiry
5. Submission to Formal Vote
Organisation
CEN Europos standartizacijos komitetasICS
25.140.30 - Hand-operated toolsForeignTC'S
CEN/SS I09Number of comments
0Comment start date
2025-07-04Scope
This document specifies the method for the calibration of hand torque tools and describes the method of calculation of measurement uncertainties for the calibration. It also specifies the minimum requirements for a certificate of calibration to this standard for hand torque tools. The Annex C of this document specifies the minimum requirements for the calibration of the torque measurement device where the relative measurement uncertainty interval, W´md, is not already provided by a traceable calibration certificate. This document applies to hand torque tools which are classified as indicating torque tools (Type I) and setting torque tools (Type II). NOTE Hand torque tools covered by this document are those identified in ISO 1703:2018 by reference numbers 7 1 00 01 0 to 7 1 00 14 0 inclusive. Torque limiting hand torque tools do not yet have reference numbers and will not do so until the next revision of ISO 1703Relations
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