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2. Bolt (fastener) - Wikipedia

   en.wikipedia.org/wiki/Bolt_(fastener)

   Bolted joint in vertical section Screw joint. The distinction between a bolt and a screw is poorly defined. The academic distinction, per Machinery's Handbook, [3] is in their intended purpose: bolts are designed to pass through an unthreaded hole in a component and be fastened with the aid of a nut.

3. List of screw and bolt types - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_and_bolt_types

   A plow bolt is bolt similar to a carriage bolt, except the head is flat or concave, and the underside of the head is a cone designed to fit in a countersunk recess. Plow bolts provide a smooth surface for attaching a plow moldboard to its beam, where a raised head would suffer from soil abrasion. There are many variations, with some not using a ...

4. Screw - Wikipedia

   en.wikipedia.org/wiki/Screw

   The most common uses of screws are to hold objects together and there are many forms for a variety of materials. Screws might be inserted into holes in assembled parts or a screw may form its own thread. [1] The difference between a screw and a bolt is that the latter is designed to be tightened or released by torquing a nut.

5. Bolted joint - Wikipedia

   en.wikipedia.org/wiki/Bolted_joint

   Bolt banging occurs in buildings when bolted joints slip into "bearing under load", thus causing a loud and potentially frightening noise resembling a rifle shot that is not, however, of structural significance and does not pose any threat to occupants. A bolted joint between two elements may act as a bearing-type joint, or a friction joint.

6. Screw thread - Wikipedia

   en.wikipedia.org/wiki/Screw_thread

   Fasteners such as wood screws, plastic screws, machine screws, nuts, and bolts. Connecting threaded pipes and hoses to each other and to caps and fixtures. Gear reduction via worm drives; Moving objects linearly by converting rotary motion to linear motion, as in the leadscrew of a jack.

7. Fastener - Wikipedia

   en.wikipedia.org/wiki/Fastener

   Typical fasteners (US quarter shown for scale) A fastener (US English) or fastening (UK English) [1] is a hardware device that mechanically joins or affixes two or more objects together. In general, fasteners are used to create non-permanent joints; that is, joints that can be removed or dismantled without damaging the joining components. [2]