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2. Threaded rod - Wikipedia

   en.wikipedia.org/wiki/Threaded_rod

   A threaded rod, also known as a stud, is a relatively long rod that is threaded on both ends; the thread may extend along the complete length of the rod. [1] They are designed to be used in tension. [2] Threaded rod in bar stock form is often called all-thread (ATR); other names include fully-threaded rod, redi-rod, continuously-threaded rod ...

3. ASTM A325 - Wikipedia

   en.wikipedia.org/wiki/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 1 ⁄ 2 to 1 + 1 ⁄ 2 inches (13 to 38 mm) in diameter. [1]

4. Screw - Wikipedia

   en.wikipedia.org/wiki/Screw

   High-strength steel bolts have property class 8.8, which is 800 MPa ultimate strength and 0.8*800=640 MPa yield strength or above. The same type of screw or bolt can be made in many different grades of material. For critical high-tensile-strength applications, low-grade bolts may fail, resulting in damage or injury.

5. Anchor bolt - Wikipedia

   en.wikipedia.org/wiki/Anchor_bolt

   Threaded sleeves: consist of a tube with an internal thread which is anchored back into the concrete. For all the type of the cast-in-place anchors, the load-transfer mechanisms is the mechanical interlock, [ 3 ] i.e. the embedded part of the anchors in concrete transfers and the applied load (axial or shear) via bearing pressure at the contact ...

6. Screw thread - Wikipedia

   en.wikipedia.org/wiki/Screw_thread

   A screw thread is a ridge wrapped around a cylinder or cone in the form of a helix, with the former being called a straight thread and the latter called a tapered thread. A screw thread is the essential feature of the screw as a simple machine and also as a threaded fastener.

7. Trapezoidal thread form - Wikipedia

   en.wikipedia.org/wiki/Trapezoidal_thread_form

   The original trapezoidal thread form, and still probably the one most commonly encountered worldwide, with a 29° thread angle, is the Acme thread form (/ ˈ æ k m iː / AK-mee). The Acme thread was developed in 1894 as a profile well suited to power screws that has various advantages over the square thread , [ note 1 ] which had been the form ...