Standardization is the most important factor required to achieve the interchangeability in mass production.
Standardization is the most important factor required to achieve the interchangeability in mass production.
Threaded components both external and internal are manufactured with thread tolerance. One of the reasons for having thread tolerances is to ensue interchangeability of threaded parts.
In the BIS system of limits and fits, the grades of tolerance are represented by numbers, and they are 18 grades of tolerances.
A hole whose lower deviation is zero is called basic hole. H letters indicates basic hole.