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2. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   The tool used to drive a slot is called a common blade, flat-blade, slot-head, flat-tip [3] or flat-head / flathead [5] screwdriver. A hollow-ground screwdriver is less likely to cam out (leave the slot due to the torque being translated into an axial force, similar to that encountered with Phillips drive but dependent only on driver blade), so ...

3. High-speed steel - Wikipedia

   en.wikipedia.org/wiki/High-speed_steel

   Heavier machine tools with higher rigidity were needed to use the new steel to its full advantage, prompting redesigns and replacement of installed plant machinery. The patent was contested and eventually nullified. [7] The first alloy that was formally classified as high-speed steel is known by the AISI designation T1, which was introduced in ...

4. Hammer - Wikipedia

   en.wikipedia.org/wiki/Hammer

   A large hammer-like tool is a maul (sometimes called a "beetle"), a wood- or rubber-headed hammer is a mallet, and a hammer-like tool with a cutting blade is usually called a hatchet. The essential part of a hammer is the head, a compact solid mass that is able to deliver a blow to the intended target without itself deforming.

5. Hubble Space Telescope - Wikipedia

   en.wikipedia.org/wiki/Hubble_Space_Telescope

   The Hubble Space Telescope (HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile, renowned as a vital research tool and as a public relations boon for astronomy.

6. Berkshire Hathaway - Wikipedia

   en.wikipedia.org/wiki/Berkshire_Hathaway

   In February 2001, Berkshire acquired Johns Manville, established in 1858 and a manufacturer of fiberglass wool insulation products for homes and commercial buildings, as well as pipe, duct, and equipment insulation products. [77]

7. McDonnell Douglas F/A-18 Hornet - Wikipedia

   en.wikipedia.org/wiki/McDonnell_Douglas_F/A-18...

   The McDonnell Douglas F/A-18 Hornet is an all-weather supersonic, twin-engine, carrier-capable, multirole combat aircraft, designed as both a fighter and attack aircraft (hence the F/A designation).