Screw Types
A screw is a type of fastener that consists of a spiral-shaped thread. It is used to join two or more pieces of material, or used to secure an object in place. Screws can come in many different shapes and sizes, and are made from a variety of materials. In this article, we will look at the different types of screws and their applications.
Phillips Screws: The Phillips screw is the most common type of screw. It has a four-pointed cross-shaped head, with a slot in the center. It was designed for use with a screwdriver. It is used in a variety of applications, from furniture assembly to automotive engineering.
Flathead Screws: A flathead screw has a flat-shaped head, with a slot in the center. It is used to secure two pieces of material together, without damaging the material. Flathead screws are generally used when the application involves electrical and electronics components.
Allen Screws: An Allen screw has a hexagonal head, with a slot in the center. It is designed to be used with an Allen wrench, which is a tool specifically designed for tightening Allen screws. Allen screws are commonly used in places where a Phillips screwdriver won’t fit.
Self-Tapping Screws: Self-tapping screws are used to secure objects without the need to drill a hole first. The screw has a pointed end that makes its own hole in the material as it is driven in. Self-tapping screws are commonly used in construction, automotive and consumer electronics applications.
Machine Screws: A machine screw has a cylindrical head with a slot or Philips drive. It is designed for use with a nut in order to secure two pieces of material together. Machine screws often come with a variety of thread types, such as Unified Coarse, Unified Fine, or National Coarse.
Wood Screws: Wood screws feature a tapered shaft and a wide, flat head. They are designed for use with wood and other soft materials. Wood screws are commonly used in applications such as carpentry, cabinet making and furniture assembly.
Lag Screws: Lag screws are similar to wood screws, but they are much thicker. They are typically used in outdoor applications, such as a deck or fence.
Security Screws: Security screws are used to secure objects and prevent unauthorized access. They are often used in sensitive equipment, such as ATM machines and cash registers.
Lead Screws: Lead screws are used in applications that require precise linear motion. They are commonly used in medical and industrial automation systems.
As you can see, there are many different types of screws, each designed for its own specific purpose. Understanding the different types of screws and their applications can help you make the right choice for your next project.
