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ISO 2974:2026

Diesel engines — 60° concave cones for high-pressure fuel injection components

Oct 21, 2026

General information

60.60     Oct 21, 2026

ISO

ISO/TC 22/SC 34

International Standard

43.060.40  

English  

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Scope

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).

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 2974:2018

NOW

PUBLISHED
ISO 2974:2026
60.60 Standard published
Oct 21, 2026