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2. ASTM F568M - Wikipedia

   en.wikipedia.org/wiki/ASTM_F568M

   This standard defines property classes, the metric equivalent of a screw grade, that are almost identical to those defined by ISO 898-1, [2] except for the addition of the 8.8.3 and 10.9.3 classes. These two additional standards are fasteners that have the same mechanical properties as their base property class (i.e. 8.8 and 10.9), but are made ...

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.

5. ISO 898 - Wikipedia

   en.wikipedia.org/wiki/ISO_898

   This standard is the origin for other standards that define properties for similar metric fasteners, such as SAE J1199 and ASTM F568M. [1] It is divided into five (nonconsecutive) parts: 1. Bolts, screws and studs with specified property classes – Coarse thread and fine pitch thread [2] 2. Nuts with specified proof load values – Coarse ...

6. Bolt (fastener) - Wikipedia

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

   Hanger bolt - Bolt that has no head, machine threaded body followed by a wood threaded screw tip. Allow nuts to be attached to what is really a screw. Hex bolt - Bolt with a hexagonal head and threaded shank. Section immediately under head may be unthreaded for fastening thicker materials. J bolt - Bolt shaped like the letter J, used for tie downs.

7. ASTM A354 - Wikipedia

   en.wikipedia.org/wiki/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.