• I.S. EN 493:1993

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    FASTENERS - SURFACE DISCONTINUITIES - NUTS

    Available format(s):  Hardcopy, PDF

    Superseded date:  29-09-2004

    Language(s):  English

    Published date:  01-01-1993

    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)

    Foreword
    1 Scope
    2 Normative references
    3 Types, causes, appearance and limits of surface
       discontinuities
    4 Inspection and evaluation procedure
    Annex A (normative) Widening test on nuts
    Annex B (normative) Cone proof load test on nuts

    Abstract - (Show below) - (Hide below)

    Sets limits for various types of surface discontinuities on nuts with: - nominal thread diameters from 5 up to and including 39 mm; - product grade A and B; - all property classes according to EN 20898-6 and IS0 2320 unless otherwise specified in product standards or by the purchaser.

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

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By

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

    ISO 2320:2015 Fasteners Prevailing torque steel nuts Functional properties
    EN 20898-2 : 1993 MECHANICAL PROPERTIES OF FASTENERS - PART 2: NUTS WITH SPECIFIED PROOF LOAD VALUES - COARSE THREAD (ISO 898-2:1992)
    ISO 898-6:1994 Mechanical properties of fasteners Part 6: Nuts with specified proof load values Fine pitch thread
    ISO 468:1982 Surface roughness — Parameters, their values and general rules for specifying requirements
    ISO 3269:2000 Fasteners Acceptance inspection
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