SIST EN ISO 16047:2005/A1:2014 PDF

Fasteners - Torque/clamp force testing (ISO 16047:2005/Amd 1:2012)

Title (English):

SIST EN ISO 16047:2005/A1:2014

Fasteners - Torque/clamp force testing (ISO 16047:2005/Amd 1:2012)

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 7
Publication date:: May 16, 2014
ICS:: 21.060.01
Technical committee:: ISEL - Mechanical elements

Document language:

enru

Delivery time:1–7 days

Price:44 €

Description (English):

This International Standard specifies the conditions for carrying out torque/clamp force tests on threaded fasteners and related parts. It is applicable, basically, to bolts, screws, studs and nuts made of carbon steel and alloy steel, whose mechanical properties are specified in ISO 898-1, ISO 898-2 or ISO 898-6, having ISO metric threads with thread sizes M3 to M39. It is also applicable to the combination of other externally and internally threaded fasteners with a triangular ISO thread according to ISO 68-1. It is not applicable to set screws and similar threaded fasteners that are not under tensile stresses, nor to screws which form their own mating thread or threaded fasteners having additional self-locking features. Unless otherwise agreed, the tests are carried out at room temperature. However, tests carried out under standard conditions are made at a temperature of 10 °C to 35 °C. This method allows determination of the tightening characteristics of threaded fasteners and related parts.

Technical details

SKU: SIST EN ISO 16047:2005/A1:2014

Abstract

Overview

EN ISO 16047:2005/A1:2012 - Fasteners: Torque/clamp force testing is an amendment to ISO 16047:2005 adopted by CEN (approved 14 September 2012). It updates the international test standard for measuring torque and resulting clamp (preload) force on metric threaded fasteners (thread sizes M3 to M39) whose mechanical properties are specified in ISO 898-1 or ISO 898-2. The amendment clarifies scope language, updates normative references, and adjusts specified terminology (for example, removing references to ISO 898-6 and self‑locking fastener wording).

Key topics and requirements

Scope refinement: Applies to fasteners with mechanical properties defined in ISO 898-1 or ISO 898-2 and to metric thread sizes M3–M39. References to ISO 898-6 and to “additional self-locking features” were removed in the amendment.
Normative references: ISO 898-6 reference deleted; primary mechanical-property references are ISO 898-1 and ISO 898-2.
Terminology and table corrections: Amendment updates table entries (e.g., the definition of proof load Fp now references ISO 898-1 or ISO 898-2, whichever is relevant).
Test focus: Standard governs how to relate applied torque to resulting clamp (preload) force for fasteners, and how to document and interpret those measurements in conformity testing and quality control (without prescribing any unlisted test apparatus specifics).

Applications

Quality control and production testing of bolts and screws where accurate torque-to-preload relationships are critical.
Validation of assembly procedures to ensure correct clamp force during manufacture or maintenance.
R&D and material/fastener performance characterization for engineering design and safety assessments.
Supplier qualification and incoming inspection to verify fastener mechanical behavior against specified classes.

Who uses this standard

Fastener manufacturers and suppliers for product testing and specification compliance.
Test laboratories performing torque and clamp force measurements.
Design, assembly and quality engineers in automotive, aerospace, machinery, construction and industrial manufacturing.
Procurement and inspection teams ensuring supplied fasteners meet mechanical and performance criteria.

Related standards

ISO 16047:2005 (original)
ISO 898‑1 - Mechanical properties of fasteners: bolts, screws and studs
ISO 898‑2 - Mechanical properties of nuts

This EN ISO 16047 amendment is an essential reference for organizations that need standardized procedures and terminology for torque testing, clamp force measurement, and related fastener performance verification.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and requirements

Scope refinement: Applies to fasteners with mechanical properties defined in ISO 898-1 or ISO 898-2 and to metric thread sizes M3–M39. References to ISO 898-6 and to “additional self-locking features” were removed in the amendment.
Normative references: ISO 898-6 reference deleted; primary mechanical-property references are ISO 898-1 and ISO 898-2.
Terminology and table corrections: Amendment updates table entries (e.g., the definition of proof load Fp now references ISO 898-1 or ISO 898-2, whichever is relevant).
Test focus: Standard governs how to relate applied torque to resulting clamp (preload) force for fasteners, and how to document and interpret those measurements in conformity testing and quality control (without prescribing any unlisted test apparatus specifics).

Applications

Quality control and production testing of bolts and screws where accurate torque-to-preload relationships are critical.
Validation of assembly procedures to ensure correct clamp force during manufacture or maintenance.
R&D and material/fastener performance characterization for engineering design and safety assessments.
Supplier qualification and incoming inspection to verify fastener mechanical behavior against specified classes.

Who uses this standard

Fastener manufacturers and suppliers for product testing and specification compliance.
Test laboratories performing torque and clamp force measurements.
Design, assembly and quality engineers in automotive, aerospace, machinery, construction and industrial manufacturing.
Procurement and inspection teams ensuring supplied fasteners meet mechanical and performance criteria.

Related standards

ISO 16047:2005 (original)
ISO 898‑1 - Mechanical properties of fasteners: bolts, screws and studs
ISO 898‑2 - Mechanical properties of nuts

SIST EN ISO 16047:2005/A1:2014 PDF

Technical details

Abstract

Overview

Key topics and requirements

Applications

Who uses this standard

Related standards

Related standards

Abstract

Overview

Key topics and requirements

Applications

Who uses this standard

Related standards

Related standards

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