This part of ISO 6489 specifies the dimensional requirements for hitch-hooks used in the attachment to agricultural towing vehicles of towed, non-balanced trailers and implements equipped with a ring specified in ISO 20019. Its purpose is to ensure the interchangeability of the mechanical connections on agricultural towing vehicles. This part of ISO 6489-1 is applicable only in those cases where the vertical static load does not exceed 30 kN.
BS ISO 6489-1:2002 history
2002BS ISO 6489-1:2002 Agricultural vehicles - Mechanical connections between towed and towing vehicles - Dimensions of hitch-hooks
2002BS ISO 6489-1:2001 Agricultural vehicles. Mechanical connections between towed and towing vehicles - Dimensions of hitch-hooks