In many industries, from mechanical engineering to tool making and precision mechanics, the precisely tolerated positioning of components determines the quality and longevity of a product. Conventional threaded joints are often insufficient to precisely align and securely join components. This is where reamer bolts come into play – they ensure a play-free guide in bores and ensure repeatable assembly with the highest precision. In this article, you will learn why reamer bolts are the better choice for aligned joints, and the role of tolerances, thread runouts, and undercuts for optimal assembly.