Historical
ISO 2974:2005
Diesel engines - High-pressure fuel injection pipe end-connections with 60 degrees female cone
ISO 2974:2005 specifies the dimensional requirements of high-pressure pipe end-connections for diesel (compression-ignition) engine fuel injection equipment.
It is applicable to externally threaded end-connections of types 1 and 2 having a 60° female cone, as well as to the pipe end assemblies of high-pressure fuel injection pipes with outside diameters of up to and including 12 mm.
International Organization for Standardization [iso]