Lockbolts are high strength, structural fastener tools that are very simple and quick to place. These fasteners last for many years. They are in fact the best solution where spot welding is not possible. As far as its application is concerned, it has been used widely in engineering industries all over the world for years. It is used in railways, body building of vehicles, containers and construction.

The tools have high tensile strength and shear strength, high speed assembly, great vibration resistance and high performance. They are rugged and robust fastener system with an ease of inspection. During the initial stages of its installation, it engages and pulls on the pintail. The joint is pulled together and then the nose assembly's cone-shaped cavity is forced down the collar. This locks it in the channel of the rugged pin. The swaged collar and pin then combines to give a shape to the installed tool. Squeezing action diminishes the collar's diameter, thereby increasing its length. This results in stretching the pin creating a clamp force on the joint.

Since the shear strength of a lock bolt varies according to the strength of the material and its minimal diameter, increasing the material's diameter or grade can increase the shear strength of the fastener system. Then again, the tensile strength of the tool depends on the collar's shear resistance and the number of channels it fills up.

Installing lockbolts take into account several processes. Firstly, the bolt's pin is inserted in the prepared hole in work piece. Then the collar is placed on the pin from another side. Tool nose piece is also placed on the pin. When it is activated, the jaws of the placed tool lock onto the pulling serrations at bolt's tail and pull off the bolt lengthwise compelling the outer nose casing against mating collar. When the placed tool starts pulling the bolt, nose casing pushes up the collar against rear application sheet steadfastly pulling the material sheets. Then nose casing moves all over the collar area and towards application rear sheet. Collar is clamped against rolled grooves. Material from collar then flows in the grooves locking up the collar to the bolt. However, the process doesn't end here.

The material from collar moves downward the collar's length towards the rear sheet for forming the flange. The drive needed for nose casing to move all over the portion of collar increases all through the placing action and rolls up at break notch until and unless the stress is high causing the bolt to break.

Lockbolts are basically made up of various kinds of non-metallic and metallic materials. The non-metallic fastener systems are generally made up of thermoplastic, plastic or rubber materials. The metal fasteners are made up of brass, aluminum, bronze, brass, steel, copper or titanium. Bolts made up of proprietary alloys are also easily available in the market.