Working draft
ISO/WD 272
Fasteners — Hexagon products — Widths across flats
Reference number
ISO/WD 272
Edition 3
© ISO 2025
Working draft
Under development
A working group has prepared a draft.
Will replace ISO 272:1982

Abstract

Specifies the widths to be used in the respective product standards; it sets out a logical ratio between underhead (or nut) bearing area and the tensile stress area of the screw thread.

General information

  • Status
     : Under development
    Stage
    : WD approved for registration as CD [20.99]
  • Edition
     : 3
  • Technical Committee :
    ISO/TC 2/SC 7
  • RSS updates

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

9
Industry, Innovation and Infrastructure

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