Heavy Vehicle (Vehicle Standards) National Regulation (NSW)

A kingpin used in a B-double or road train must—

be a 50mm king pin, 75mm kingpin or 90mm kingpin; and

have a D-value complying with AS 2175-1990‘Articulated Vehicles—Kingpins’.

A 50mm kingpin or 90mm kingpin used in a B-double or road train must—

be built to meet the dimension requirements in AS 2175-1990‘Articulated Vehicles—Kingpins’; and

not be worn away more than recommended by the standard.

A 75mm kingpin used in a B-double or road train must—

be built to meet the dimensions in the following diagram; and

Dimensions of a 75mm kingpin

not be worn away more than mentioned in subsection (4).

In testing a 75mm kingpin used in a B-double or road train to decide whether its D-value complies with subsection (1)(b)—

diameter F in the diagram must not wear more than 3mm; and

diameter G in the diagram must not wear more than 2mm; and

height H in the diagram must not wear more than 2.3mm.