ISO 2974 pdf download Diesel engines — 60 degree female cones for high-pressure fuel injection components Scope This International Standard specifies the dimensional requirements of end-connections for highpressure fuelinjection equipment components, used on diesel (compression-ignition) engines. lt is applicable to externally threaded 60° female cones (see Figures 1, 2, 5 and 6) and intended for usewith high-pressure fuel injection pipe...