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BSI BS EN ISO 10642:2026

Hexagon socket countersunk head screws
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BSI BS EN ISO 10642:2026

Hexagon socket countersunk head screws

PUBLISH DATE 2026
PAGES 18
BSI BS EN ISO 10642:2026
This document specifies the characteristics of hexagon socket countersunk head screws with reduced loadability due to head design, in steel and stainless steel, with metric coarse pitch threads M2 to M20, and with product grade A. NOTE 1        Other dimensional options are given in ISO 888, ISO 965-1 and ISO 4753. NOTE 2        The reduced loadability (related to the countersunk head dimensions in combination with penetration of the hexagon 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 Table 5. NOTE 3        Particular attention is needed to ensure alignment of the countersunk head with the bearing surface of the countersink in the assembly.
SDO BSI: British Standards Institution
Document Number ISO 10642
Publication Date March 17, 2026
Language en - English
Page Count 18
Revision Level
Supercedes
Committee FME/9
Publish Date Document Id Type View
March 17, 2026 BS EN ISO 10642:2026 Revision
Oct. 29, 2019 BS EN ISO 10642:2019 Revision
May 1, 2008 BS EN ISO 10642:2004 Revision
May 15, 1998 BS EN ISO 10642:1998 Revision
Feb. 28, 2013 BS EN ISO 10642:2004+A1:2012 Consolidated