What are self-tapping screws?
Unlike more standard screws that require a separate hole to be drilled prior to installation, pointed self-tapping screws, often known as thread tapping screws, have the ability to drill or “tap” their own holes when inserted in to various materials, hence the name.
However, another form of this type of screw, a thread-forming screw, does require a pilot hole before installation. This type of self-tapping screw is best known for the ability to tightly grip on to materials.
What can self-tapping screws be used for?
In terms of materials, pointed self-tapping screws are used to secure commonly used construction materials together, including metal, plastic, wood and brick. Thread-forming screws are ideal for use with plastic products.
Specific examples of the use of these screws are in products that need to be disassembled and reassembled easily for maintenance purposes, or materials that are only accessible from one side.
Just like with other screws, this type of screw is available in a number of sizes and lengths to accommodate for a variety of projects.
How to use self-tapping screws
Using self-tapping screws is an incredibly easy process, all you need to do is follow these steps:
· Mark the position of the screw
· In the case of thread-forming screws, drill the pilot hole
· Line up the screw with either the marking or the pilot hole
· Twist the screw once or twice by hand to establish its position
· Tighten the screw with either a screwdriver or drill bit until it is secure
Top tips for using self-tapping screws
· For thread-forming screws in particular, it is vital that they are not overtightened, as this can cause the material to crack or the head of the screw to strip
· When drilling a pilot hole (if necessary), make sure it is slightly smaller than the diameter of the screw
Self-tapping screws are an essential part of many projects, and knowing what makes them different from other types of screws, as well as how to use them effectively, will make your next project a breeze. You can find self-tapping screws and several other types in handy multipacks in our expansive range of Screws, Fixings and Adhesives.