fitment

Fitment is the practice of fitting parts together and, more broadly, the installation of equipment or fixtures into a system or space. In engineering and manufacturing, fitment covers both the parts that are mounted to a machine and the process of achieving a correct fit through tolerances. Key concerns include alignment, clearance, and interference, with fits classified as clearance, interference, or transition based on hole and shaft dimensions.

In construction and interiors, fitments are permanent or semi-permanent fixtures installed in a space, such as kitchen and bathroom fittings, lighting, and cabinetry hardware. In real estate, the term is used in the phrase fixtures and fittings to denote items attached to a property that are included in sales or leases.

In automotive and cycling, fitment describes the compatibility of wheels, tires, brakes, and suspension with a vehicle, commonly expressed in measurements like bolt pattern, offset, width, and diameter.

Terminology: fitment is often used interchangeably with fixture or fitting, but usage varies by industry. Fitment tends to emphasize the act of fitting or the specific component, while fixture and fitting are broader terms for installed items.

Overall, fitment encompasses both the specification of compatible parts and the practical work of installing and aligning them to ensure proper operation.