This extra functionality and cost saving feature makes self-drilling screws the clear choice for metal building construction. The drill points are numbers 1 through 5 and the amount of steel they can drill through increases as the numbered point increases.
During installation, self-drilling screws will also tap threads to a degree. In short, and this is where the confusion lies, all self-drilling screws are also self-tapping screws, but all self-tappers are not self-drillers. Self-drilling screws eliminate the need for a pilot hole, but can tap as well. Self-tapping screws tap their own threads, but cannot drill through metal and require a pilot hole. These screws are not interchangeable, and mixing up the two can cause many headaches or possible failures in the field.
They are good for metal building and light gauge metal assemblies; Point 5 is already capable of fastening half-inch steel sheets. Self-drilling screws are useful in HVAC applications, cladding, metal roofing, steel framing, and other general construction tasks. Both attach steel on steel and steel on wood when rivets or nuts and bolts cannot do the job. Between these two, however, self-drilling screws offer two distinct advantages: time and costs saved at assembly time, and reduced error in installation, which often happens if one pre-drills holes in the wrong size.
Consult with self-drilling screw manufacturers you can trust — contact BDN Fasteners today. Our headquarters are in Taiwan and we operate sales and marketing offices in India and Thailand.
Home Improvement. What are self-tapping screws? Cite This! Try Our Crossword Puzzle! What Is the Missing Number? Try Our Sudoku Puzzles!
You May Like. For harder surfaces, self tapping screws might have little notches on the thread to help cut the thread, just like a tap. Not all tapping screws have a pointy tip, some will be blunt or flat. They both technically tap their own threads, all screws do this to varying degrees. But, the self drilling screws skip a step in the process. The way self-drilling screw are made make them ideal for attaching thin sheet metal onto wood or metal frames.
Self tapping screws are ideal for metal with a pilot hole, they are also sometime reffered to as metal screws. I hope we have cleared up all the confusion, just remember all self drilling screws are self tapping, but not all self tapping screws are self drilling. We have lots of both types of screws in our store as well, they are available in steel and stainless steel. If you have a driver that you think we should carry in our store, give us a call!
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