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ISO/DIS 2974

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

General information

40.20     Dec 25, 2025

ISO

ISO/TC 22/SC 34

International Standard

43.060.40  

Buying

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Scope

ISO 2974:2018 specifies the dimensional requirements of end-connections for high-pressure fuel injection equipment components, used on diesel (compression-ignition) engines.
ISO 2974:2018 is applicable to externally threaded 60° female 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 female cones (see Table 1); and
- up to and including 9 mm for fabricated female cones (see Table 2).
Details of the pipe connection ends referenced in this document are shown in ISO 13296.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 2974:2018

NOW

PROJECT
ISO/DIS 2974
40.20 DIS ballot initiated: 12 weeks
Dec 25, 2025

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