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2. Bolt (fastener) - Wikipedia

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

   Elevator bolt - Bolt with a large flat head used in conveyor system setups. Hanger bolt - Bolt that has no head, machine threaded body followed by a wood threaded screw tip. Allow nuts to be attached to what is really a screw. Hex bolt - Bolt with a hexagonal head and threaded shank. Section immediately under head may be unthreaded for ...

3. List of screw and bolt types - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_and_bolt_types

   elevator bolt: An elevator bolt is a similar to a carriage bolt, except the head (or foot, depending on the application) is thin and flat. There are many variations. [11] Elevator bolts are designed to be used for leveling appliances or furniture. eye bolt: An eye bolt is a bolt with a looped head.

4. Screw - Wikipedia

   en.wikipedia.org/wiki/Screw

   An assortment of screws, and a US quarter for size comparison A wood screw: a) head; b) non-threaded shank; c) threaded shank; d) tip The six classical simple machines. A screw is an externally helical threaded fastener capable of being tightened or released by a twisting force to the head.

5. Weeks Hardware - Wikipedia

   en.wikipedia.org/wiki/Weeks_Hardware

   The ceiling is high, made of elaborately patterned tin and in need of paint. The freight elevator in the back of the store is powered by hand. A tall, darkly stained plywood case that holds bolts and screws in its dozens of drawers, was built, according to a little brass label on one corner, by A.R. Brown on May 7, 1901. [3]

6. Fastener - Wikipedia

   en.wikipedia.org/wiki/Fastener

   Structural bolt DIN 6914 with DIN 6916 washer and UNI 5587 nut. A threaded fastener has internal or external screw threads. [7] The most common types are the screw, nut and bolt, possibly involving washers. Other more specialized types of threaded fasteners include captive threaded fasteners, stud, threaded inserts, and threaded rods.

7. Richard T. Crane - Wikipedia

   en.wikipedia.org/wiki/Richard_T._Crane

   Richard and his brother Charles soon formed R. T. Crane & Bro., which manufactured and sold brass goods and plumbing supplies. The new company soon won contracts to supply pipe and steam-heating equipment in large public buildings such as the Cook County courthouse and the state prison at Joliet. In 1865, R. T. Crane and Brother was ...