Specification for dimensions of 3 1/2 - 4 1/2 in diameter fifth wheel king pin for use with extra heavy duty semi-trailers
Edition 1970-08-28

Specification for clearance dimensions and fifth wheel positions for tractors and semi-trailers
Edition 1970-03-20

Specification for dimensions of a 'contact' type coupling for vacuum and pressure braking systems on trailers and semi-trailers
Edition 1963-02-21

Specification for towing jaw for use between trailers of 5-16 tons gross weight and towing vehicle
Edition 1964-06-15

Specification for towing jaw for use between trailers of 5-35 tons gross weight and towing vehicle
Edition 1964-06-15

Specification for standard automatic roller-type coupling for semi-trailers of 7 tons to 14 3/4 tons laden weight
Edition 1970-12-18

Specification for strength requirements of towing brackets and coupling balls for caravans and light trailers
Edition 1979-02-28

Towing vehicle, trailer and semi-trailer pneumatic braking systems. "Contact" type couplings
Edition 2000-04-15

Specification for standard automatic roller-type coupling for semi-trailers not exceeding 7 1/4 tons laden weight
Edition 1970-12-18

Specification for clutch housings for reciprocating internal combustion engines. Nominal dimensions and tolerances
Edition 1993-07-15