DIN Standards Committee Tools and Clamping Devices
Assembly tools for screws and nuts – Hand torque tools – Part 1: Requirements and methods for design conformance testing and quality conformance testing: minimum requirements for declaration of conformance (ISO/DIS 6789-1:2025); German and English version prEN ISO 6789-1:2025
Abstract
This document specifies the conformance testing and marking requirements for hand torque tools used for controlled tightening of screws and nuts. It also specifies the minimum requirements for a manufacturer's declaration of conformance for hand torque tools. 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 1703 This document does not specify requirements of calibration certificates for hand torque tools. These are described in ISO 6789‑2. This document does not specify requirements for verifying the performance of hand torque tools. These are described in ISO 6789-3.
Begin
2025-04-16
WI
CSI09012
Planned document number
DIN EN ISO 6789-1
Project number
12103009
Responsible national committee
NA 121-05-01 AA - Assembly tools for screws and nuts, Fastening tools
Responsible european committee
Responsible international committee
ISO/TC 29/SC 10/WG 3 - Hand torque tools
draft standard
Assembly tools for screws and nuts – Hand torque tools – Part 1: Requirements and methods for design conformance testing and quality conformance testing: minimum requirements for declaration of conformance (ISO/DIS 6789-1:2025); German and English version prEN ISO 6789-1:2025
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