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    I.S. EN ISO 2320:2015

    Current The latest, up-to-date edition.

    FASTENERS - PREVAILING TORQUE STEEL NUTS - FUNCTIONAL PROPERTIES (ISO 2320:2015)

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2015

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    National Foreword
    European foreword
    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Symbols
    5 Thread
    6 Lubrication
    7 Mechanical properties of prevailing torque nuts
    8 Functional requirements for prevailing torque properties
    9 Test method
    Annex A (normative) - Temperature influence on prevailing
            torques of nuts with nonmetallic insert
    Annex B (informative) - Principles for the evaluation of the
            total coefficient of friction, [mu]tot
    Annex C (informative) - Test clamp force and prevailing
            torques for prevailing torque nuts M3 and M4 in
            property classes 8 and 10
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes the functional properties for prevailing torque steel nuts when tested at an ambient temperature range of +10 degrees C to +35 degrees C.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 16047:2005 Fasteners — Torque/clamp force testing
    ISO 898-2:2012 Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with specified property classes — Coarse thread and fine pitch thread
    ISO 965-2:1998 ISO general purpose metric screw threads — Tolerances — Part 2: Limits of sizes for general purpose external and internal screw threads — Medium quality
    ISO 262:1998 ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts
    ISO 68-1:1998 ISO general purpose screw threads — Basic profile — Part 1: Metric screw threads
    ISO 273:1979 Fasteners — Clearance holes for bolts and screws
    ISO 261:1998 ISO general purpose metric screw threads General plan
    ISO 898-1:2013 Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screws and studs with specified property classes — Coarse thread and fine pitch thread
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