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ISO 337:1981

Road vehicles — 50 semi-trailer fifth wheel coupling pin — Basic and mounting/interchangeability dimensions

Dec 1, 1981

General information

90.60     Jun 5, 2026

ISO

ISO/TC 22/SC 40

International Standard

43.040.70  

French   English  

Buying

Published

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Scope

This second edition cancels and replaces the first edition (1973). Specifies the dimensions of the 50 coupling pin /dia. 50,8 mm (2 in)/ which is used for coupling semi-trailers to prime movers, taking into account the limitations of weight generally laid down by official requirements. Some figures illustrate shapes and the difference of types.

Life cycle

NOW

PUBLISHED
ISO 337:1981
90.60 Close of review
Jun 5, 2026

CORRIGENDA / AMENDMENTS

PUBLISHED
ISO 337:1981/Cor 1:1990

National adoptions

SRPS M.N2.222:1987  
ISS

Road vehicles — 50 semi-trailer fifth wheel coupling pin — Basic and mounting/interchangeability dimensions

95.99   Withdrawal of Standard

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