What are some standard three-point hitch dimensions?

Some standard three-point hitch dimensions are a 17 millimeter upper link and 17 millimeter lower links spaced 500 millimeters apart for Category zero hitches and a 19 millimeter upper link and 22.4 millimeter lower links spaced 718 millimeters apart for Category one. Categories two through four get progressively larger.

Standardized dimensions exist for three-point hitches in categories zero through four. In addition to the hitch pin size and spacing between lower links, dimensions for each category also include pull power of the drawbar. The drawbar power of category one hitches, for example, is between 15 and 35 kilowatts or 20 and 45 horsepower.