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2. ASTM A325 - Wikipedia

   en.wikipedia.org/wiki/ASTM_A325

   In 2016, ASTM officially withdrew specification A325 and replaced it with ASTM F3125. [3] To minimize confusion, bolt head markings are unchanged and the designation A325 is retained as a grade name within the new standard. [4] In 1951, A325 bolts were recognized as equivalent to a hot driven ASTM A141 rivet. [5]

3. ASTM A490 - Wikipedia

   en.wikipedia.org/wiki/ASTM_A490

   These bolts are equivalent to ASTM A325 bolts in application and geometry, but are made to a higher strength. The imperial grades are made to the same strength specifications as ASTM A354 grade BD. The metric grades are made to the same strength specifications as ASTM F568M property class 10.9. [5]

4. Ti-6Al-4V - Wikipedia

   en.wikipedia.org/wiki/Ti-6Al-4V

   Ti-6Al-4V. Ti-6Al-4V (UNS designation R56400), also sometimes called TC4, Ti64, [1] or ASTM Grade 5, is an alpha-beta titanium alloy with a high specific strength and excellent corrosion resistance. It is one of the most commonly used titanium alloys and is applied in a wide range of applications where low density and excellent corrosion ...

5. ASTM A354 - Wikipedia

   en.wikipedia.org/wiki/ASTM_A354

   ASTM A354. ASTM A354 is an ASTM International standard that defines chemical and mechanical properties for alloy steel bolts, screws, studs, and other externally threaded fasteners. It is officially titled: Standard Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners. [1]

6. ASTM F568M - Wikipedia

   en.wikipedia.org/wiki/ASTM_F568M

   ASTM F568M. 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.

7. Screw - Wikipedia

   en.wikipedia.org/wiki/Screw

   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 (torque) to the head. The most common uses of screws are ...