NF EN ISO 6789
Assembly tools for screws and nuts - Hand torque tools - Requirements and test methods for design conformance testing, quality conformance testing and recalibration procedure
ISO 6789:2003 specifies the requirements for, and describes the test methods and marking of, hand torque tools used for controlled tightening of bolted connections.It applies in particular to indicating and setting torque wrenches in accordance with numbers 258 and 259 of ISO 1703:1983.
ISO 6789:2003 specifies the requirements for, and describes the test methods and marking of, hand torque tools used for controlled tightening of bolted connections.
It applies in particular to indicating and setting torque wrenches in accordance with numbers 258 and 259 of ISO 1703:1983.
ISO 6789-1:2017 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 declaration of conformance for hand torque tools. ISO 6789-1:2017 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 1703:2005 by reference numbers 6 1 00 11 0, 6 1 00 11 1 and 6 1 00 12 0, 6 1 00 12 1 and 6 1 00 14 0, 6 1 00 15 0. ISO 1703 is currently under revision. In the next edition, torque tools will be moved to an own clause, and with this change the reference numbers will also change and additional reference numbers will be added. ISO 6789-1:2017 does not specify requirements of calibration certificates for hand torque tools. These are described in ISO 6789‑2.
ISO 6789-2:2017 specifies the method for the calibration of hand torque tools and describes the method of calculation of measurement uncertainties for the calibration. ISO 6789-2:2017 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. ISO 6789 is applicable for the step by step (static) and continuous (quasi-static) calibration of torque measurement devices, the torque of which is defined by measuring of the elastic form change of a deformable body or a measured variable which is in proportion to the torque. ISO 6789-2:2017 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 the ones identified in ISO 1703:2005 by reference numbers 6 1 00 11 0, 6 1 00 11 1 and 6 1 00 12 0, 6 1 00 12 1 and 6 1 00 14 0, 6 1 00 15 0. ISO 1703 is currently under revision. In the next edition, torque tools will be moved to an own clause, and with this change the reference numbers will also change and additional reference numbers will be added.
- Avant-proposiv
- Introductionv
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1 Domaine d'application1
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2 Références normatives1
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3 Termes et définitions1
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4 Classification2
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5 Exigences3
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5.1 Contrôle de conformité de conception3
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5.2 Contrôle de conformité de qualité5
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5.3 Réétalonnage 5
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6 Étalonnage 5
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6.1 Dispositif d'étalonnage5
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6.2 Température d'étalonnage6
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6.3 Conditions d'étalonnage6
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6.4 Procédure d'étalonnageS
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6.5 Exemples d'étalonnageS
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7 Marquage11
- Annexe A (normative) Outils dynamométriques à lecture directe: Type I12
- Annexe B (normative) Outils dynamométriques à déclenchement: Type II13
- Bibliographie15
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