Abstract
Specifies the dimensions of the 90 coupling pin /dia. 89 mm (3,5 in)/ which is used for coupling extra-heavy-duty vehicles exceeding the limitations of weight generally laid down by official requirements. Some figures illustrate shapes and the difference of types. This second edition cancels and replaces the first edition (1977).
Life cycle
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Now
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Revised by
PublishedISO 4086:2001
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