About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 88. Chapters: Screws, Archimedes' screw, List of screw drives, Screw thread, Rivet, Tap and die, Screwdriver, Roller screw, Bolted joint, Unified Thread Standard, John Penn, Hex key, Multi-jackbolt tensioner, Leadscrew, British Standard Whitworth, Hose clamp, Computer case screws, ISO metric screw thread, Nut, Trapezoidal thread forms, Backlash, Torx, Jubilee Clip, Ball screw, Anchor bolt, ISO 898, Helix angle, ASTM A325, British Association screw threads, ASTM A490, Panzergewinde, ISO 965, Torque screwdriver, United States Standard thread, ASTM F568M, Thread-locking fluid, Buttress thread, Thread angle, Set screw, Threaded rod, ASTM A354, Interrupted screw, British standard fine thread, Tri-Wing, Henry F. Phillips, Square thread form, One Good Turn, Screw extractor, British Standard Cycle, P. L. Robertson, Cam out, Screw anchor, Mating connection, Self-tapping screw, Eye bolt, Transit bolt, British standard brass thread, Thumbscrew, Ring bolt, Herbert screw, Square nut. Excerpt: A screw, or bolt, is a type of fastener characterized by a helical ridge, known as an external thread or just thread, wrapped around a cylinder. Some screw threads are designed to mate with a complementary thread, known as an internal thread, often in the form of a nut or an object that has the internal thread formed into it. Other screw threads are designed to cut a helical groove in a softer material as the screw is inserted. The most common uses of screws are to hold objects together and to position objects. Often screws have a head, which is a specially formed section on one end of the screw that allows it to be turned, or driven. Common tools for driving screws include screwdrivers and wrenches. The head is usually larger than the body of the screw, which keeps the screw from being driven deeper than the length of the screw and to provide a bearing ...
