Bolts, hex nuts and screws are basic hardware items use […]
Bolts, hex nuts and screws are basic hardware items used in every industry in need of fasteners. From furniture crafting and manufacturing to building and construction, every industrial application needs to use these seemingly small but significantly important tools just to hold everything in place.
Screws, nuts and bolts are fasteners used to mechanically connect things together. A fastener may be defined as a mechanical device that holds two or more bodies in definite position with respect to each other. Ever since seeing the result of fastening an axle to a wheel, humans have been using fasteners to make lives easier. Most fasteners have threads as part of their design as can be seen in screws, nuts and bolts. Fasteners are produced primarily from ferrous metals such as carbon and alloy steels. Today they are available in brass, stainless steel, copper. The process of making them involves rods, bars or wires which are cut to length and threaded. The process is called cold-forming. The modern fastener industry is indebted to Industrial Revolution and its many technological revolutions which invented and improved fasteners to keep everything connected and moving.
Nuts and bolts share the same chemistry as salt and pepper. Nuts are hardware fasteners with threaded holes. These holes are mated with bolts which help fastening a stack of different parts together. They are usually used in automobile, spare parts and for electrical usage. Nuts and bolts are strong, durable and dimension specific.
Nuts and bolts are graded with strength ratings, like an ISO property class 10 nut will be able to support the bolt proof strength load of an ISO property class 10.9 bolt without stripping. Likewise, an SAE class 5 nut can support the proof load of an SAE class 5 bolt, and so on. The proof strength of the most common property classes is listed at a bolted joint. Nuts and bolts are mostly hexagonal in shape as they give more strength and power through granularity of angles to a tool.
Hex nuts, usually known as finished full are used for fastening to a bolt when mechanically joining materials together. Hex nuts are mostly made from materials like brass, zinc plates, steel grade 8, stainless steel, silicon bronze, hot dipped galvanized and grade 2 chrome. Hot dipped galvanized and grade 2 chrome are most popular hex nuts because of being corrosion resistant. They are thick and are used mostly for exteriors and coastal areas. Whereas, the grade 2 chrome has a bright mirror like finish providing sharp looks for a variety of applications.
Carriage bolts are usually used in wood works and have a domed top and a square under the head. Carriage bolts pull into the woods tightly and a recommended by hardware users for their safe and secure fits. Carriage bolts are also available in various metals like zinc, steel and bronze. Nuts and bolts generally used in applications that need hand tightening, and regular and heavy nutting. With a professional job, they can handle the load of the wood and doors that are hinged with them. Handled by a professional, they need no maintenance once they are fixed.
After a long bumpy ride involving the quality of materials and irregular standards of size and shape, today we have reached a stage where a nut from one company and a bolt from another can fit perfectly together. Today they come in standard and Metric sizes for specific applications to fulfill wide industry needs. Stronger, lighter and easy-to-use are some of the challenges the fastener industry is facing and successfully managing today. Laptop computers use these screws, nuts and bolts. Self-locking and self-sealing screws, nuts, bolts and threaded inserts have also become common now. The latest challenge today of course is to produce environment friendly fasteners which do not use carcinogenic plating such as cadmium.