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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 1 ⁄ 2 to 1 + 1 ⁄ 2 inches (13 to 38 mm) in diameter. [1]
The bolt end is typically hex-shaped, but may exceptionally be round to make removal more difficult. The hex diameter is 3/16", or 4.7mm. A 5mm hex socket might still fit, however where tightening or removal is required, care needs to be taken to select a nut driver with a sufficiently small outer diameter, as clearance between the jackpost and ...
A breakaway bolt is a bolt with a hollow threaded shank, which is designed to break away upon impact. Typically used to fasten fire hydrants, so they will break away when hit by a car. Also used in aircraft to reduce weight. cap screw: The term cap screw refers to many different things at different times and places. Currently, it most narrowly ...
The standard designation for a UTS thread is a number indicating the nominal (major) diameter of the thread, followed by the pitch measured in threads per inch.For diameters smaller than 1 / 4 inch, the diameter is indicated by an integer number defined in the standard; for all other diameters, the inch figure is given.
ASTM F568M is an ASTM International standard for metric bolts, screws and studs that are used in general engineering applications. It is titled: Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners. It defines mechanical properties for fasteners that range from M1.6 to 100 in diameter.
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Square threads are defined as follows by ISO standards: . where Sq designates a square thread, 60 is the nominal diameter in millimeters, and 9 is the pitch in millimeters. When there is no suffix it is a single start thread.
Sex bolt: Barrel nut, barrel bolt, binding barrel, Chicago screw, post and screw or connector bolt Has a barrel-shaped flange and protruding boss that is internally threaded Split nut: Split lengthwise into two pieces (opposed halves) so that its female thread may be opened and closed over the male thread of a bolt or leadscrew Sleeve nut ...