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2. Piton - Wikipedia

   en.wikipedia.org/wiki/Piton

   1960s-era pitons, including: knifeblades, lost arrows, bugaboos, ring angles, and bongs. A piton (/ ˈ p iː t ɒ n /; also called pin or peg) in big wall climbing and in aid climbing is a metal spike (usually steel) that is driven into a crack or seam in the climbing surface using a climbing hammer, and which acts as an anchor for protecting the climber from falling or to assist progress in ...

3. Powder-actuated tool - Wikipedia

   en.wikipedia.org/wiki/Powder-actuated_tool

   A powder-actuated tool (PAT, often generically called a Hilti gun or a Ramset gun after their manufacturing companies) is a type of nail gun used in construction and manufacturing to join materials to hard substrates such as steel and concrete. Known as direct fastening or explosive fastening, this technology is powered by a controlled ...

4. Impact driver - Wikipedia

   en.wikipedia.org/wiki/Impact_driver

   An impact driver is a tool that delivers a strong, sudden rotational force and forward thrust. The force can be delivered either by striking with a hammer in the case of manual impact drivers, or mechanically in the case of powered impact drivers. It is often used by mechanics to loosen larger screws, bolts and nuts that are corrosively "frozen ...

5. Hammer drill - Wikipedia

   en.wikipedia.org/wiki/Hammer_drill

   A hammer drill, also known as a percussion drill or impact drill, is a power tool used chiefly for drilling in hard materials. [ 1 ][ 2 ] It is a type of rotary drill with an impact mechanism that generates a hammering motion. The percussive mechanism provides a rapid succession of short hammer thrusts to pulverize the material to be bored, so ...

6. Punch (tool) - Wikipedia

   en.wikipedia.org/wiki/Punch_(tool)

   Center. A center punch is used to mark the center of a point. It is usually used to mark the center of a hole when drilling holes. A drill has the tendency to "wander" if it does not start in a recess. A center punch forms a large enough dimple to "guide" the tip of the drill. The tip of a center punch has an angle between 60 and 90 degrees. [1]

7. Rail fastening system - Wikipedia

   en.wikipedia.org/wiki/Rail_fastening_system

   Rail fastening system. A rail fastening system is a means of fixing rails to railroad ties (North America) or sleepers (British Isles, Australasia, and Africa). The terms rail anchors, tie plates, chairs and track fasteners are used to refer to parts or all of a rail fastening system. The components of a rail fastening system may also be known ...