Self-tapping
From Wikipedia, the free encyclopedia
Self-tapping is the ability of a screw to advance when turned while creating its own thread. Self-tapping screws are commonly used with sheet metal and plastic components. This ability is created sometimes by creating a gap in the continuity of the thread on the screw. These edges can cut their own threads as the screw is driven in to the material, usually wood or plastic. Self tapping screws also exist for metal. They function by having a cutting edge which drills away the material, making a hole for the screw to go into.
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[edit] References
- Shigley, Joseph, Charles Mischke, Thomas H. Brown (2004). Standard Handbook of Machine Design. McGraw-Hill Professional. ISBN 0071441646.
- Keller, Charles T. (1983). 304 stainless steel self-tapping fasteners Type A (pdf). Design Tools. Textron Fastening Systems. Retrieved on 2006-09-24.
