Category: Machine Drawing

Representation of Threads

The true projection of a threaded portion of a part consists of a series of helices and it takes considerable time to draw them. Hence it is the usual practice to follow some conventional methods to represent screw threads. Screw thread nomenclature…Read More »

Forms of Threads

Bureau of Indian Standards (BIS) adapts ISO (International Organisation for Standards) metric threads which are adapted by a number of countries apart from India. The design profiles of external and internal threads are shown in below figure. The following are the relations…Read More »

Full Section | Half Section | Auxiliary Section Views

This post has been updated. [redirect url=’’ sec=’10’ ] Orthographic views when carefully selected, may reveal the external features of even the most complicated objects. However, there are objects with complicated interior details and when represented by hidden lines, may not effectively…Read More »