This International Standard specifies dimensional requirements for the mounting of injection nozzle holders in
compression-ignition (diesel) engines.
The location of the fuel inlet and leak-off connections are not defined since they vary according to the particular
application.
This International Standard applies to screw-in injection nozzle holders of types 20, 21, 21.1 and 27.
These nozzle holders are used with the pintle nozzle size “S”, type “B”, specified in ISO 2697 1).