|Self-drilling screws come in a variety of formats but all are based upon the principle of drilling and tapping in one operation. They are generally used in steel, softer metals, plastics and there is a range specially designed for use in wood/composite materials.
Some of the benefits in using this type of fastening is the increased efficiency provided by combining the drilling and tapping operations as well as a reduction in alignment issues.
Head forms include countersunk, pan, flange and hexagon styles. Self-drilling screws are available in plated steel and stainless steel for engineering, construction and general assembly purposes.