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Originally named Allen Manufacturing Company, the business produced hexagonal set screws and wrenches to fasten them. The terms "Allen wrench" (American English, though "Allen key" is also common in the US) and "Allen key" (British English) [3] are derived from the Allen brand name and refer to the generic product category "hex keys".
A hex key (also, hex wrench, Allen key and Allen wrench, Unbrako or Inbus) is a simple driver for bolts or screws that have heads with internal hexagonal recesses ().. Hex keys are formed from a single piece of hard hexagonal steel rod, having blunt ends that fit snugly into similarly shaped screw sockets.
A socket cap screw, also known as a socket head capscrew, socket screw, or Allen bolt, is a type of cap screw with a cylindrical head and hexagonal drive hole. The term socket head capscrew typically refers to a type of threaded fastener whose head diameter is nominally 1.5 times that of the screw shank ( major ) diameter, with a head height ...
2025 Western Australian state election: Armadale [3]; Party Candidate Votes % ±% Labor: Tony Buti: 11,175 52.7 −20.5 Liberal: Jason McNamara 4,136 19.5 +10.4 Greens
Allen was arrested in Texas, brought back to South Carolina, where a Richland County grand jury indicted Allen in 2002 for two counts of murder in the deaths of Hall and Harr.
The first commercial use of the patent was in 1907 for the .375 Holland-Schoenauer cartridge for a Mannlicher–Schoenauer bolt-action rifle marketed by Holland & Holland. The .375 H&H used an improved belted case shared with the .275 H&H Magnum when they were introduced together in August, 1912. [ 19 ]
An internal wrenching nut, (also known as an Allenut [1] or Allen nut), is a cylindrical nut that is internally threaded on one side and has an Allen socket on the other side; the outside of the nut is smooth or has knurling on it. The Allen socket may be 6 point or 12 point (also known as a double hex socket). They are used where hex or square ...
Jesse James' 44 caliber Hopkins & Allen pistol, 1873 model. Hopkins & Allen was founded in 1868 as a firearms manufacturer by Charles W. Allen, Charles A. Converse, Horace Briggs, Samuel S. Hopkins and Charles W. Hopkins. The latter was a former business partner of Thomas K. Bacon and an early swinging-cylinder revolver inventor.