Screws are a broad category of thread shank mechanical fasteners designed to be screwed into parts. These include wood screws and self-tapping screws. These screws have a tapered shank with a sharp screw for cutting the mating screw where it will be attached. This includes machine screws, which are very similar to bolts but are usually threaded throughout the shaft.
Screws often rely on thread friction to maintain a secure fit. With a self-tapping screw, much of this friction occurs because the hole expands in the radial direction. The screw usually has a head at one end so that the tool can turn it. Common tools for driving screws include a screwdriver and wrench. The head is usually larger than the body of the screw, which prevents the screw from being twisted deeper than the length of the screw and provides a seating surface.
ADVANTAGES OF SCREWS
Screws provide a mechanical advantage. Driving a screw requires less force over a longer period than driving a nail into the same material. For craftsmen who use hand tools, this can make construction projects much easier when it comes to screws. The screws are very durable. Because the screws are stronger, you can use fewer screws and place them further apart in a construction project, reducing project costs and speeding up the process.
The screws are tightly connected to prevent moisture and contaminants from coming into contact with the metal on the screw shaft and prevent rusting. Even if the screw head begins to rust, the shaft remains intact and lasts a long time. Screws of different sizes and different screw patterns are specially designed for use in wood, drywall, sheet metal and concrete, among others. Using the right type of screws enhances other benefits such as long-term strength.
WHAT ARE SCREWS MADE FROM?
Screws can be made from any material, but some are more popular than other screws.
Aluminium is not as durable as other materials, but there is one thing we can offer. It’s weight. Aluminium is almost the lightest fastener you can find.
This is the most common material used to make screws and there is a brief description of this steel is cheaper than some other thread material options.
Copper screws are excellent in corrosion. When the screw is exposed to the element, copper contributes to the long-term performance of the screw.
If you need a combination of strength and lightness, choose Titanium. Titanium screws often come at an additional cost, but if you need a sturdy fastener that isn’t too heavy, that extra cost will pay off.