ČSN EN ISO 7380-1

Fasteners - Button head screws with reduced loadability - Part 1: Hexagon socket button head screws

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Detail information

Designation: ČSN EN ISO 7380-1

Publication date: 01/07/2023

Pages: 24

Country: Czech technical standard

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Anotation

This document specifies the characteristics of hexagon socket button head screws with reduced loadability due to head design, in steel and stainless steel, with metric coarse pitch threads M3 to M16, and with product grade A.
If, in certain cases, other specifications are requested, stainless steel grades can be selected from ISO 3506-1, and the dimensional options from ISO 888 or ISO 4753.
NOTE - The reduced loadability (related to the 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 4

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