What type of fit is represented when a component requires no clearance?

The type of fit that represents a condition where a component requires no clearance is an interference fit. An interference fit occurs when the dimensions of two mating parts are such that the larger part will not fit into the smaller part without some degree of deformation or force. This fit is typically used when parts must remain attached under load without the use of additional fasteners.

In situations involving an interference fit, the parts are designed to be slightly oversized and smaller in terms of their diameters, leading to a tight fit that can even create a compressive force. This is critical in applications where additional stability or mechanical strength is necessary.

Other types of fits, such as loose fit or sliding fit, typically allow movement or clearance between the components, which would not satisfy the requirement of having no clearance. Force fit is often used interchangeably with interference fit, but it generally implies a fit that is so tight that assembly requires tools or forces to connect the components; however, the term "interference fit" is more commonly used in precision machining contexts for clarity.