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2. Shear pin - Wikipedia

   en.wikipedia.org/wiki/Shear_pin

   A sailor checks the outside diameter of a shear pin in the machinery repair shop aboard US aircraft carrier John C. Stennis. A shear pin is a mechanical detail designed to allow a specific outcome to occur once a predetermined force is applied. It can either function as a safeguard designed to break to protect other parts, or as a conditional ...

3. Nail (fastener) - Wikipedia

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

   Other types of nails include pins, tacks, brads, spikes, and cleats. Nails are typically driven into the workpiece by a hammer or nail gun. A nail holds materials together by friction in the axial direction and shear strength laterally. The point of the nail is also sometimes bent over or clinched after driving to prevent pulling out.

4. Split-rail fence - Wikipedia

   en.wikipedia.org/wiki/Split-rail_fence

   Simple split-rail fence Log fence with double posts (photo taken in 1938). A split-rail fence, log fence, or buck-and-rail fence (also historically known as a Virginia, zigzag, worm, snake or snake-rail fence due to its meandering layout) is a type of fence constructed in the United States and Canada, and is made out of timber logs, usually split lengthwise into rails and typically used for ...

5. Spring pin - Wikipedia

   en.wikipedia.org/wiki/Spring_pin

   A spring pin (also called tension pin or roll pin) is a mechanical fastener that secures the position of two or more parts of a machine relative to each other. Spring pins have a body diameter which is larger than the diameter of the hole they are intended for, and a chamfer on either one or both ends to facilitate starting the pin into the hole.

6. Fence (woodworking) - Wikipedia

   en.wikipedia.org/wiki/Fence_(woodworking)

   A fence is a part of many woodworking tools; it is typically used to guide or secure a workpiece while it is being sawn, planed, routed or marked. Fences play an important role for both accuracy and safety. Fences are usually straight and vertical, and made from metal, wood or plastic. [1]: 194

7. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   The breakaway head (also called breakoff or shear fastener) [72] is a high-security fastener whose head breaks off during installation, during or immediately after the driving process, to leave only a smooth surface. It typically consists of a countersunk flat-head bolt, with a thin shank and hex head protruding from the flat head.

8. Pin tumbler lock - Wikipedia

   en.wikipedia.org/wiki/Pin_tumbler_lock

   In a master-keyed lock, some or all of the pin chambers in the lock have three pins in them instead of two. Between the driver pin and the key pin is a third pin called the spacer pin, also known as a master wafer. Thus each pin line has two shear points, one where the driver and spacer pins meet, and one where the spacer and key pins meet. So ...

9. Picket fence - Wikipedia

   en.wikipedia.org/wiki/Picket_fence

   Traditionally picket fences were made out of wood and painted white (or whitewashed), but now picket fences are also widely available in low-maintenance polyvinyl chloride (PVC or Vinyl). Until the introduction of advertising on fences in the 1980s, cricket fields were usually surrounded by picket fences, giving rise to the expression "rattling ...