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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 ...
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 ...
A fastener (US English) or fastening (UK English) [ 1] is a hardware device that mechanically joins or affixes two or more objects together. In general, fasteners are used to create non-permanent joints; that is, joints that can be removed or dismantled without damaging the joining components. [ 2] Steel fasteners are usually made of stainless ...
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 ...
A pentagon screw drive uses five-sided fastener heads, and the fastener is known as a penta screw or penta bolt. It is designed to be intrinsically incompatible with many tools. It is designed to be intrinsically incompatible with many tools.
AudiTorx is a tamper-proof fastener where a convex and smooth fastener head is topped with a break-away Torx drive that snaps off when the engineered torque is reached, leaving a rivet-like bolt head that cannot be easily removed. The main application for these fasteners is in the railroad industry. [29]
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