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Most Commonly Used Fasteners and Their Applications

Fasteners come in a variety of forms that you may be familiar with, such as nails, screws, bolts, and so on. Fasteners are classified as either permanent or non-permanent, and non-permanent fasteners can be further broken down into additional categories, such as threaded fasteners and general fasteners.
The following are some examples of the more commonly used fasteners and the different varieties available.
Bolts come in different forms used for a variety of purposes. One common example are carriage bolts. A carriage bolt has a sunken head with a square space beneath. The goal is to keep the bolt from tightening more once the nut is in the desired place.
Hex head bolts are also common and feature a hexagon-shaped head. The bolt has threads and a straight shaft. Some examples of hex head bolts include trim head hex cap screws, hex tap bolts, and hex cap screws.
Machine screws, though called screws, are actually still bolts and have a flat head and a threaded shaft. Machine screws are among the most commonly used fastener due to the diverse nature of their design.
A hex lag screw is most often used on projects like wood floors and other heavy duty materials. Contractors typically use a wrench to install hex lag screws. A wood screw has a smoother head with spiraled threads. The wood screw joins pieces of wood together without splitting it.
Sheet metal screws have a tapered end and spiraling threads. The goal of the tapered end is to pierce sheet metal without the need to drill a lead hole beforehand. You can also use sheet metal screws on plastic.
A rivet is a permanent fastener. It is different from screws and bolts because they are permanent in application. The goal is to keep sheet metal together or to hold plates. Rivets are most commonly used in industrial projects like fusing airplanes, automobiles, steelwork, ships, and the like.
Rivets come in different varieties and are useful for specific projects that require extra strength to fasten. Two of the most commonly used rives are solid rivets and pop rivets.
Solid rivets are easier to use and are reliable. The rivets feature a shank head in cylindrical shape with a straight shaft. Solid rivets are commonly used in industrial structures such as bridges.
Pop rivets are useful for a variety of purposes due to how easy they are to install. They have a tube shape and quickly fuse two materials with ease. The downside of pop rivets is that they have less reliability. Pop rivets cannot withstand as heavy a load as solid rivets.
Concrete Anchors
When it comes to fastening concrete, you have to use a stronger fastener than a bolt or screw. Concrete requires anchors to connect it. Anchors are more difficult to install in concrete due to the strength of the material.
Concrete is the most commonly used material for bases, so concrete anchors are a must to keep structures in place. There are a variety of concrete anchors to choose from.
Drop in anchors have threads inside and are most commonly used to adhere light fixtures, railings, and other decorative and lightweight objects. Sleeve anchors have threads on the stud and a washer on the other end. They are best used when the concrete is hollow in nature.
Wedge anchors are useful to hold material to a solid piece of concrete. It has a blunt head with a nut and washer on the other end.
If you have further questions about the different fasteners available and which type is best for your project, please contact us at Ascension Fasteners.