Today, let's take a brief look at the types of screws and their functions.
1. Basic Structure of Screws
A screw consists of three main parts: the head, the threads, and the shank. The head allows us to rotate it with a tool, the threads are used to screw into objects, and the length and diameter of the shank determine the force it can withstand.
Phillips screws: The head has two cross-shaped slots and requires a Phillips screwdriver.
Slotted screws: The head has a straight slot and is screwed with a slotted screwdriver.
Hexagonal screws: The head has a hexagonal shape and requires a hexagonal wrench.
Self-tapping screws: The threads are sharp and can be screwed directly into materials such as wood and plastic.
Expansion screws: Suitable for use in hard materials such as walls and concrete, and can secure heavy objects.
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3. How to Choose a Screw?
When choosing a screw, first consider its intended use. For example, self-tapping screws can be used for securing wood, while expansion screws can be used for securing heavy objects. Also, consider the material of the screw, for example, stainless steel screws are suitable for rust-resistant environments.
4. Common Problems
Loose Screws: Check and tighten regularly, using screw locker if necessary.
Damaged Screws: If the screw head is damaged, use a screw extractor to remove it.
Rusted Screws: Avoid prolonged exposure to moisture or use rust-resistant screws.
There are many different types of screws, each with its own application. Understanding the types and uses of screws can help you choose the right screws and ensure smooth work.
