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2. Screw extractor - Wikipedia

   en.wikipedia.org/wiki/Screw_extractor

   The screw is drilled out with the appropriate drill and drill bushing. The extractor is then hammered into the hole with a brass hammer, because a steel hammer is more likely to cause the extractor to break. The appropriate special nut is then attached to the end of the extractor. The nuts can then be turned with a wrench to remove the screw. [1]

3. Air hammer (fabrication) - Wikipedia

   en.wikipedia.org/wiki/Air_hammer_(fabrication)

   [3] By World War II, rivet guns were used widely in U.S. aircraft factories both for riveting aluminum sheets, and for flow forming, the process of working aluminum sheet into and over wooden forms by the application of the pneumatic rivet gun. Post-war industry brought many new applications for the "air hammer" technology. Among these were:

4. Armement Air-Sol Modulaire - Wikipedia

   en.wikipedia.org/wiki/Armement_Air-Sol_Modulaire

   The AASM (French: Armement Air-Sol Modulaire, lit. 'Modular Air-to-Ground Armament'), [6] [7] also known as AASM Hammer ("Hammer" standing for "Highly Agile Modular Munition Extended Range"), [8] is a French, all-weather, smart air-to-surface stand-off weapon developed by Safran Electronics & Defense.

5. Thinset - Wikipedia

   en.wikipedia.org/wiki/Thinset

   The history of thinset dates back to the post-World War II era when the tile industry sought more efficient methods for tile installation. [7] Before thinset, the standard method for installing tiles was the thick-set or mud-set method, which involved a thick layer of a sand and cement mixture.

6. Pneumatic hammer - Wikipedia

   en.wikipedia.org/wiki/Pneumatic_hammer

   Air hammer (fabrication), a pneumatic hand tool used to carve in stone, and to break or cut metal objects apart; Air hammer (pile driver), a pile driver that is driven by air; Jackhammer, a pneumatic or electro-mechanical tool that combines a hammer directly with a chisel; Nail gun, a form of hammer used to drive nails into wood or other materials

7. Jackhammer - Wikipedia

   en.wikipedia.org/wiki/Jackhammer

   An electropneumatic hammer is often called a rotary hammer because it has an electric motor, which rotates a crank. The hammer has two pistons – a drive piston and a free-flight piston. The crank moves the drive piston back and forth in the same cylinder as the flight piston. The drive piston never touches the flight piston.