Historical
ISO 5675:2008
Agricultural tractors and machinery - General purpose quick-action hydraulic couplers
ISO 5675:2008 specifies the essential interface dimensions, as defined in ISO 7241-1, and the operating requirements for hydraulic couplers employed to transmit hydraulic power from agricultural tractors to agricultural machinery. It is applicable to couplers used in hydraulic lines other than those used for braking circuits (see ISO 5676).
International Organization for Standardization [iso]