International Standard
ISO 2974:2026
Diesel engines — 60° concave cones for high-pressure fuel injection components
Reference number
ISO 2974:2026
Edition 10
2026-10
© ISO 2026

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Published (Edition 10, 2026)

ISO 2974:2026

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Abstract

This document specifies the dimensional requirements of end-connections for high-pressure fuel injection equipment components, including fuel injectors, CR injectors, common rails, distribution blocks, injection pumps and high-pressure supply pumps used on diesel (compression-ignition) engines.

It is applicable to externally threaded 60° concave cones (see Figures 1, 2, 5, and 6) and intended for use with high-pressure fuel injection pipe assemblies with tube outside diameters of:

  • up to and including 12 mm for integral concave cones (see Table 1); and
  • up to and including 9 mm for fabricated concave cones (see Table 2).

General information

  • Status
     : Published
    Publication date
     : 2026-10
    Stage
    : International Standard published [60.60]
  • Edition
     : 10
    Number of pages
     : 10
  • Technical Committee :
    ISO/TC 22/SC 34
    ICS :
    43.060.40 
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

9
Industry, Innovation and Infrastructure

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