90.93 Standard confirmed Jun 23, 2026
ISO
ISO/TC 22/SC 40 Specific aspects for light and heavy commercial vehicles, busses and trailers
International Standard
43.040.70 Couplings
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.
PUBLISHED
ISO 337:1981
90.93
Standard confirmed
Jun 23, 2026
PUBLISHED
ISO 337:1981/Cor 1:1990