Introduction of different types of screws according to head shape
Screws are an important aspect of any construction or engineering project. Screws are available in a variety of material constructions and designs. Steel machine screws are one of the most widely used screw types in the world. These fasteners are known for their physical characteristics. In a previous article, we discussed these stainless steel screws based on the drive shape. Here, we'll see how to tell them apart based on the shape of the head.
Screw Types by Head Type
The head of the screw holds the driver, which acts as a stopping point once the screw is driven into the surface. Head types differ in the shape of the heads and the space they occupy in different projects. Here are the most popular screw distinctions based on head type:
Countersunk-Slotted Head: A screw has a countersunk head that allows it to be flush with the surface of the material it is used on. These screws are used for general woodworking projects, such as attaching hinges to doors.
Button Head Screws: These are the most commonly used screw types today. These screws are used to secure blocks of material in applications. These button head screws look very decorative and are usually made of brass, steel, stainless steel, aluminum, etc.
Pozidriv Head Screws: These screws have a Pozidriv head and are used when using a special screwdriver. These non-slip screws are used for fixings in corners or tight spaces.
Pan Head Screws: These are one of the most popular head types, with slightly rounded heads and shorter vertical sides. These screws have a very low profile when driven into the surface of the material.
Flat Head Screws: These screws have a countersunk head designed to sit low on the surface of the screw's drilled hole. These heads help avoid surface protrusions.
Truss Head Screws: These screws are characterized by their rounded tops and flat bottoms, providing a low profile while remaining above the surface line.
Oval Head Screws: Oval head screws combine the features of the flat head and flat head types. The actual head is slightly rounded and the bottom surface is sunken. Due to their aesthetic appeal, these screws are used to provide a decorative finish.
Cylindrical Head Screws: These screws are characterized by a cylindrical shape and a convex top. These screws are also known as raised button head screws.