ISO 4086:2001

Published (Edition 3, 2001)

This standard was last reviewed and confirmed in 2021. Therefore this version remains current.

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Abstract

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

official requirements.

It is applicable to fifth wheel kingpins intended for engaging 90 fifth wheels as defined in ISO 3842 [1].

This International Standard also specifies the dimensional characteristics required for mounting and

interchangeability.

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[2].

This standard contributes to the following Sustainable Development Goal

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