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2. List of screw and bolt types - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_and_bolt_types

   Shoulder screw specifications call out the shoulder diameter, shoulder length, and threaded diameter; the threaded length is fixed, based on the threaded diameter, and usually quite short. Shoulder screws can be manufactured in many materials such as alloy heat-treated steel for maximum strength and wear resistance and stainless steel for its ...

3. Bolt (fastener) - Wikipedia

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

   B8M bolt - B8M bolts are manufactured from type 316 stainless steel, known for its excellent resistance to corrosion, especially in marine or chloride environments. The ‘M’ in B8M indicates that it is a molybdenum-bearing version, meaning it contains molybdenum, which enhances its resistance to corrosion and pitting. [6]

4. Reamer - Wikipedia

   en.wikipedia.org/wiki/Reamer

   A typical reamer consists of a set of parallel straight or helical cutting edges along the length of a cylindrical body. Each cutting edge is ground at a slight angle and with a slight undercut below the cutting edge. Reamers must combine both hardness in the cutting edges, for long life, and toughness, so that the tool does not fail under the ...

5. Barrel threads - Wikipedia

   en.wikipedia.org/wiki/Barrel_threads

   Attaching the barrel to the receiver using a barrel nut and a barrel with a shoulder is an alternative to action threads, which has been used in firearms such as the Sten gun and AR-15. Hand tools Quick barrel change systems is an increasingly popular alternative, as seen in for example SIG Sauer 200 STR , Roessler Titan or Blaser R8 .

6. ASTM A325 - Wikipedia

   en.wikipedia.org/wiki/ASTM_A325

   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 ⁄ to 1⁄ inches (13 to 38 mm) in diameter. [1]

7. Stainless steel - Wikipedia

   en.wikipedia.org/wiki/Stainless_steel

   Stainless steel, also known as inox, corrosion-resistant steel (CRES), and rustless steel, is an alloy of iron that is resistant to rusting and corrosion. It contains iron with chromium and other elements such as molybdenum, carbon, nickel and nitrogen depending on its specific use and cost. Stainless steel's resistance to corrosion results ...