International Organization for Standardization (ISO)
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ISO 6489-1:2001
Scope
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.
ISO 6489-1:2001 history
2001ISO 6489-1:2001 Agricultural vehicles - Mechanical connections between towed and towing vehicles - Part 1: Dimensions of hitch-hooks
1991ISO 6489-1:1991 Agricultural vehicles; mechanical connections in towing vehicles; part 1: hook type
1980ISO 6489-1:1980 Agricultural vehicles — Mechanical connections on towing vehicles — Part 1: Hook type — Dimensions