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BS AU 1c:1989

BS AU 1c:1989

$86.31

Specification for dimensions of ’50’ fifth wheel king pin for semi-trailers

Published By Publication Date Number of Pages
BSI 1989 8
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This International Standard specifies the dimensions of the 50 [ϕ 50,8 mm (2 in)] fifth wheel coupling pin which is used for coupling semi-trailers to prime movers, taking into account the limitations of weight generally laid down by official requirements.

NOTE If, for extra heavy-duty vehicles, this coupling pin is not sufficient, an 90 [ϕ 89 mm (3.5 in)] fifth wheel coupling pin according to ISO 4086 shall be used.

In addition, this International Standard specifies the dimensional characteristics necessary for mounting and interchangeability.

Basic, mounting and interchangeability dimensions.

BS AU 1c:1989
$86.31