This International Standard specifies the characteristics of the 90 [89 mm (3,5") diameter] semi-trailer fifth wheel
kingpin used for coupling extra-heavy-duty vehicles exceeding the limitations of weight generally laid down by
It is applicable to fifth wheel kingpins intended for engaging 90 fifth wheels as defined in ISO 3842 .
This International Standard also specifies the dimensional characteristics required for mounting and
NOTE The dimensions of the 50 semi-trailer fifth wheel kingpin, normally used to couple semi-trailers to tractors in
compliance with mass limitations usually set by compulsory regulations, are given in ISO 337.
Status: PublishedPublication date: 2001-10
Edition: 3Number of pages: 5
Technical Committee: ISO/TC 22/SC 40 Specific aspects for light and heavy commercial vehicles, busses and trailers
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