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2. ASTM F568M - Wikipedia

   en.wikipedia.org/wiki/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.

3. ASTM A490 - Wikipedia

   en.wikipedia.org/wiki/ASTM_A490

   ASTM A490 and ASTM A490M are ASTM International standards for heavy hex structural bolts made from alloy steel.The imperial standard is officially titled Standard Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength, while the metric standard (M) is titled Standard Specification for High-Strength Steel Bolts, Classes 10.9 and 10.9.3, for Structural ...

4. Screw - Wikipedia

   en.wikipedia.org/wiki/Screw

   Mild steel bolts have property class 4.6, which is 400 MPa ultimate strength and 0.6*400=240 MPa yield strength. 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. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   Slot screw drives have a single horizontal indentation (the slot) in the fastener head and is driven by a "common blade" or flat-bladed screwdriver.This form was the first type of screw drive to be developed, and, for centuries, it was the simplest and cheapest to make because it can just be sawed or filed.

6. Threaded rod - Wikipedia

   en.wikipedia.org/wiki/Threaded_rod

   With respect to shape, stud bolts a.k.a. studs are categorized into three basic types: "fully threaded stud bolts", "tap-end stud bolts", and "double-end stud bolts". Each of these studs have different application. As name suggests, fully threaded studs have full body coverage with threads for full engagement of the matings nuts or similar ...

7. List of DIN standards - Wikipedia

   en.wikipedia.org/wiki/List_of_DIN_standards

   Cases 10 A 3 and 10 B 3 for semiconductor devices; main dimensions: Withdrawn: DIN 41869-1: Case 23 A 3 for semiconductor devices; main dimensions: Withdrawn: DIN 41869-2: Cases 34 A 2 and 34 A 3 for semiconductor devices; main dimensions: Withdrawn: DIN 41869-3: Case 11 A 3 and 11 B 3 for semiconductor devices; main dimensions: Withdrawn: DIN ...

8. List of countries by life expectancy - Wikipedia

   en.wikipedia.org/wiki/List_of_countries_by_life...

   This list of countries by life expectancy provides a comprehensive list of countries alongside their respective life expectancy figures. The data is differentiated by sex, presenting life expectancies for males, females, and a combined average.

9. List of countries by suicide rate - Wikipedia

   en.wikipedia.org/wiki/List_of_countries_by...

   In 2021, the global rate of suicide deaths for men was 12.3 per 100,000, more than double the rate for women, which stood at 5.9 per 100,000 population. However, the sex disparity was uneven across regions, with a male-to-female ratio ranging from as low as 1.4 in the Southeast Asia Region to nearly 4.0 in the Region of the Americas.