Mechanical Engineering is the evergreen field of technology. The reason is simple. Every smallest aspect of human life contains more or fewer mechanics. This has been so for thousands of years. To date, the field is meeting high-performance demands everywhere. The simplest and smallest elements of this field have stayed along all these years. One of them is Fasteners. Every type of fastener has in-demand some or other way. There are so many options to choose from. You will always find a suitable one to hold things together for you. However, finding the right one is not a piece of cake. Bolts are one of the most demanded fasteners.
The mechanics behind a bolt's work is the tightening or tensioning the bolt to its priory set design load. This creates a clamping force at the joint. A small mistake can lead to huge damage due to the decreased integrity of the joint. Only a small part of the external load falls on the bolt in a fully tightened bolted joint.