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2. Self-tapping screw - Wikipedia

   en.wikipedia.org/wiki/Self-tapping_screw

   Self-tapping screws can be divided into two classes: [3] those that displace material (especially plastic and thin metal sheets) without removing it, known as "thread-forming" self-tapping screws, and self-tappers with sharp cutting surfaces that remove the material as they are inserted, termed "thread-cutting" self-tapping screws.

3. Pentalobular screw thread - Wikipedia

   en.wikipedia.org/wiki/Pentalobular_screw_thread

   A pentalobular screw thread is a form of self-forming thread used for screws. Self-forming screws are used in ductile materials, such as aluminium and plastics. Self-tapping screws are widely used for driving into sheet metal or plastics and forming their own thread. They may be either self-drilling, forming their own hole through unbroken ...

4. List of screw and bolt types - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_and_bolt_types

   self-tapping machine screw: A self-tapping machine screw is similar to a machine screw, except the lower part of the shank is designed to cut threads as the screw is driven into an untapped hole. The advantage of this screw type over a self-drilling screw is that, if the screw is reinstalled, new threads are not cut as the screw is driven. set bolt

5. Tap and die - Wikipedia

   en.wikipedia.org/wiki/Tap_and_die

   The operator guides the tapping head to each (already-drilled) hole and quickly taps it. Drilling and tapping centers, whose name sounds similar to that of tapping stations, are actually light-duty, affordable machining centers of 2, 2.5, or 3 axes that are designed for a life of mainly drilling and tapping with limited milling use.

6. Pilot hole - Wikipedia

   en.wikipedia.org/wiki/Pilot_hole

   to guide a larger drill to the appropriate location and ease the job of the larger drill, allow the insertion of another hole-making tool, such as a knockout punch, that will produce the final-sized hole, or; locate, guide, and provide clearance for a self-threading screw in wood or plastic to prevent damaging the material or breaking the screw.

7. 72 Tried And True Life Hacks That People Use On A ... - AOL

   www.aol.com/lifestyle/72-tried-true-life-hacks...

   Tapping the top of a hard boiled egg to make it easier to peel. Using bolts and nuts to pull rusted bearings off of vehicles. Nailing Gerber baby food lids to the Rafters in the garage and using ...