Which components are typically considered when determining machining tolerances?

When determining machining tolerances, it is essential to consider a variety of features that can affect the precision and functionality of a part. Among these features, edges, holes, and spaced features play a critical role because they often define how parts fit together and interact within an assembly.

Edges are important for defining the shape of the component and ensuring it fits correctly with other parts. Holes are crucial for functionalities like assembly or mechanical connection, where precise diameters and placements are necessary to maintain proper alignment and performance. Spaced features, which often refer to the distances between various machined elements, further influence the overall dimensions and functionality of the part. By focusing on all of these elements, machinists can ensure that the final product meets its design specifications and functions as intended.

In contrast, the other options are too limited in scope. Only considering outer diameters does not account for the precision required in other critical areas. Focusing solely on material thickness overlooks important features that may impact the part's performance. Similarly, while surface finishes and coatings are relevant to the overall quality and appearance of a part, they do not directly relate to the geometric tolerances that define how closely parts adhere to specified dimensions. Thus, a comprehensive approach considering a range of features is essential