NF EN ISO 14581

NF EN ISO 14581

November 2013
Standard Cancelled

Fasteners - Hexalobular socket countersunk flat head screws

ISO 14581:2013 specifies the characteristics of hexalobular socket countersunk flat head screws in product grade A and with threads from M2 to M10 inclusive and with reduced loadability (according to Table 3).

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Main informations

Collections

National standards and national normative documents

Publication date

November 2013

Number of pages

15 p.

Reference

NF EN ISO 14581

ICS Codes

21.060.10   Bolts, screws, studs

Classification index

E25-180

Print number

1 - 30/10/2013

International kinship

ISO 14581:2013

European kinship

EN ISO 14581:2013
Sumary
Fasteners - Hexalobular socket countersunk flat head screws

ISO 14581:2013 specifies the characteristics of hexalobular socket countersunk flat head screws in product grade A and with threads from M2 to M10 inclusive and with reduced loadability (according to Table 3).

Standard replaced by (1)
NF EN ISO 14581
January 2023
Standard Current
Fasteners - Hexalobular socket countersunk flat head screws (common head style) with reduced loadability

<p class="MsoBodyText" style="margin-bottom: 12.0pt; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'MS Mincho';">This document specifies the characteristics of hexalobular socket countersunk flat head screws with reduced loadability due to head design, in steel and stainless steel, with metric coarse pitch threads M2 to M10, and with product grade A.</span></p> <p class="MsoBodyText" style="margin-bottom: 12.0pt; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'MS Mincho';">If in certain cases other specifications are requested, stainless steel grades can be selected from </span><span class="stdpublisher"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'MS Mincho';"> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">3506</span></span></span>‑<span class="stddocPartNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">1</span></span></span>, and dimensional options from <span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">888</span></span></span> or <span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">4753</span></span></span>.</span></p> <p class="Note" style="tab-stops: 19.85pt 39.7pt 48.25pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'MS Mincho';">NOTE 1<span style="mso-tab-count: 1;">   </span>The reduced loadability (related to the countersunk head dimensions in combination with penetration of the hexalobular socket specified in this document) implies a limitation of ultimate tensile load shown by a specific marking (property class preceded by a zero). The loadability in the head is assumed to be 80 % of that in the thread for all sizes and all property classes; see </span><span class="citetbl"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">Table 3</span></span></span><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'MS Mincho';">.</span></p> <p class="Note" style="tab-stops: 19.85pt 39.7pt 48.25pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'MS Mincho';">NOTE 2<span style="mso-tab-count: 1;">   </span>Hexalobular socket countersunk head screws (high head), with full loadability are specified in </span><span class="stdpublisher"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'MS Mincho';"> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">14582</span></span></span>, but these products are not interchangeable, because of different head heights.</span></p> <p class="Note" style="tab-stops: 19.85pt 39.7pt 48.25pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'MS Mincho';">NOTE 3<span style="mso-tab-count: 1;">   </span>Particular attention is needed to ensure alignment of the countersunk head with the bearing surface of the countersink in the assembly.</span></p>

Table of contents
View the extract
  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Dimensions
    2
  • 4 Exigences et Normes internationales de référence
    4
  • 5 Marquage
    6
  • 6 Désignation
    6
  • Bibliographie
    7
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