Hexagon Flange Bolt

A hexagon flange bolt is a type of fastener that combines the characteristics of a hexagonal bolt and a flange, which is a built-in washer or disc that helps distribute the load more evenly and prevents the bolt from loosening. This type of bolt is commonly used in various industries, including automotive, construction, machinery, and piping, because of its ability to handle higher loads and provide a secure and stable fastening solution.

Size: GB5787(10*70), GB5789(12*55)

Grade: 10.9, 8

Material: 10b21

Finish: Blue and white zinc plating, Heat treatment


Key Features:

  • Hexagonal Head: The bolt has a six-sided hexagonal head, which allows for easy tightening with a wrench or socket.
  • Flange: The flange is a circular, wide, and slightly raised washer that is integrated into the bolt’s head. It serves to improve load distribution and provide additional stability, often eliminating the need for a separate washer.
  • Threading: Like standard bolts, hexagon flange bolts come with threads that match corresponding nuts or threaded holes for fastening.
  • Material: Typically made of steel, stainless steel, or other durable materials. The flange may also have a coating (e.g., zinc-plated) to enhance corrosion resistance.
  • Locking Mechanism: Some hexagon flange bolts feature a locking design, such as a nylon insert or serrated flange, to prevent loosening under vibration.

Common Uses:

  • Automotive Industry: Used in automotive assemblies, including engine parts, chassis, and suspension components, where vibration resistance and load distribution are crucial.
  • Heavy Machinery and Equipment: Used in industrial settings where secure and stable fastening is needed, particularly for larger equipment and structural assemblies.
  • Construction: Applied in metal structures, where high strength and load-bearing capacity are essential.
  • Electronics and Appliances: Common in equipment and appliances that require strong connections with low surface damage.

Advantages:

  • No Washer Needed: The integrated flange eliminates the need for a separate washer, reducing assembly time and part count.
  • Improved Load Distribution: The flange helps distribute the load more evenly, preventing damage to softer materials and enhancing the connection’s durability.
  • Vibration Resistance: The design often provides better resistance to loosening under vibrations, especially in applications where constant movement occurs.
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