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2. Helix Software Company - Wikipedia

   en.wikipedia.org/wiki/Helix_Software_Company

   Helix Software Company, Inc. was a New York City based software company founded in October 1986. [2] The company developed software tools and utilities for DOS and Windows. [1] In 1993, Helix licensed some of its memory management technology to Microsoft for use in MS-DOS 6.0. Microsoft subsequently released Helix's memory management technology ...

3. Nut (hardware) - Wikipedia

   en.wikipedia.org/wiki/Nut_(hardware)

   Nut (hardware) An M4 nut threaded onto an Allen key socket head screw. A nut is a type of fastener with a threaded hole. Nuts are almost always used in conjunction with a mating bolt to fasten multiple parts together. The two partners are kept together by a combination of their threads' friction (with slight elastic deformation ), a slight ...

4. Bolt (fastener) - Wikipedia

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

   Bolt (fastener) A bolt is an externally helical threaded fastener that fastens objects with unthreaded holes together. This is done by applying a twisting force ( torque) to a matching nut. The bolt has an external male thread requiring a matching nut with a pre-formed female thread. [ 1] Unlike a screw, which holds objects together by the ...

5. List of screw and bolt types - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_and_bolt_types

   Machine screws are also made with socket heads (see above), in which case they may be referred to as socket head machine screws. stove bolt: gutter bolt: A Stove bolt is a type of machine screw that has a round or flat head and is threaded to the head. They are usually made of low grade steel, have a slot or Phillips drive, and are used to join ...

6. ASTM A325 - Wikipedia

   en.wikipedia.org/wiki/ASTM_A325

   ASTM A325. ASTM A325 is an ASTM International standard for heavy hex structural bolts, titled Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength. It defines mechanical properties for bolts that range from ⁄ to 1⁄ inches (13 to 38 mm) in diameter. [ 1]

7. Bolted joint - Wikipedia

   en.wikipedia.org/wiki/Bolted_joint

   A bolted joint is one of the most common elements in construction and machine design. It consists of a male threaded fastener (e. g., a bolt) that captures and joins other parts, secured with a matching female screw thread. There are two main types of bolted joint designs: tension joints and shear joints. The selection of the components in a ...