Before revision: In mechanical engineering, limits and fits are a set of rules regarding the dimensions and tolerances of machined parts if they are to achieve the desired ease of assembly, and security after assembly - sliding fit, interference fit, rotating fit, non-sliding fit, loose fit, etc.
After revision: matingIn mechanical engineering, limits and fits are a set of rules regarding the dimensions and tolerances of machined parts if they are to achieve the desired ease of assembly, and security after assembly - sliding fit, interference fit, rotating fit, non-sliding fit, loose fit, etc.