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Hex Socket Cap Screw
A hex socket cap screw, also known as a socket head cap screw or an Allen bolt, is a type of fastener with a cylindrical head and a hexagonal recess. This design allows the screw to be driven using an Allen wrench (hex key) or a hex bit. Hex socket cap screws are known for their high strength, precision, and versatility.
Head Design:
Cylindrical Head: The head is cylindrical with a flat top, providing a clean and sleek appearance.
The hex socket inside the head allows for high torque application and a secure fit with an Allen wrench or hex bit.
 
Thread Types:
Fully Threaded: The screw is threaded along its entire length, suitable for applications requiring a strong hold over the entire length.
Partially Threaded: The screw has an unthreaded portion under the head, offering greater shear strength and alignment in specific applications.
 
Materials:
Steel: Commonly used for general applications, offering strength and durability.
Stainless Steel: Provides excellent corrosion resistance, ideal for outdoor and corrosive environments.
Alloy Steel: Offers high tensile strength for heavy-duty applications.
Other Materials: Aluminum, brass, and titanium options are available for specialized applications requiring unique properties like lightweight or non-magnetic characteristics.
 
Finishes and Coatings:
Black Oxide: Provides a sleek appearance and mild corrosion resistance.
Zinc Plating: Offers enhanced corrosion resistance for general use.
Nickel Plating: Provides a bright finish and improved corrosion resistance.
Other Coatings: Available in various coatings for specific environmental conditions and aesthetic requirements.
 
Benefits
High Strength: Made from high-strength materials, hex socket cap screws provide a secure and durable fastening solution.
Precision: The hexagonal recess allows for precise torque application, reducing the risk of stripping.
Aesthetic Appeal: The cylindrical head and various finishes provide a clean and professional appearance.
Versatility: Available in a wide range of sizes, materials, and finishes to suit diverse applications.