Threading is a basic process of metal cutting in manufacturing. This process is used to produce fasteners, namely nuts and bolts. Both are important in the assembly of components. Any inaccuracies that exist will affect the connectivity of components and in turn, affect the overall performance of a product or system. This book is prepared by experienced practitioners of the trade, using simple and easy-to-understand language. As such, it is useful as a basic reference for machine operators and even diploma- and certificate-level vocational students as well as school students who wish to deepen their technical knowledge. After reading this book, readers will have no trouble putting into practice the correct method of threading.