This standard BS ISO 11001-3:2009 Agricultural wheeled tractors and implements. Three- point hitch couplers is classified in these ICS categories:
65.060.01 Agricultural machines and equipment in general
This part of ISO 11001 specifies the essential dimensions for the attachment of three-point hitch implements to agricultural wheeled tractors equipped with a three-point linkage according to ISO 730 or ISO 8759-1 and a link coupler.