3 Primary Classifications of Screw Fastener

Various type of screws

No construction is complete without the use of fasteners. These, after all, hold the structures together. There are many types of fasteners, but screw fasteners are popular because of their sheer strength.

Stainless steel screw fasteners are renowned for their strength, durability, corrosion resistance and aesthetic appeal. Even with all these benefits, fasteners are still inexpensive and are available in a broad range. Here are some of the major types of screw fasteners.

Machine Screws

Machine screws are sometimes called machine bolts. Machine screws have fully threaded shanks and come in sizes of up to 19.05mm. They are designed for fastening to already tapped holes on metal surfaces in conjunction with nuts. They are used in constructions that require a clean finish and creation of strong joints.

Sheet Metal Screws

These screws have fully threaded shanks with sharp threads and a tip, which allow them to cut through various materials including metal, plastic, and wood. A sequence of three numbers denotes sheet metal screw sizes. The numbers represent the screw’s thread diameter, thread count and fastener length. There are two main types of sheet metal screws, namely, self-drilling and self-tapping screws. Self-drilling screws have drill points that cut through material and negate the need for prior boring.

Cap Screws

These screws have a cylindrical shaft with threads on the external surface and a large head. The large head allows a positive mechanical stop on screw tightening. The standard cap screw styles on the market include socket, button and hex head screws. When tightened, cap screws have a high clamping force.

Any hitches in construction materials will significantly compromise your building’s integrity and completion time. Hence, it is essential to work with a supplier that has quick on-site service and a large stock to prevent costly downtimes and compromise. With all the above screws in your inventory, you are assured of perfect construction and prompt project completion.