Hexagon socket black zinc plated

Cold heading process is one of the new processes for pressure machining of less or no cutting
metal. It is a processing method that utilizes the plastic deformation of metal under the action of
external forces, and with the aid of molds, redistributes and transfers the volume of metal to form
the required parts or blanks. The cold heading process is most suitable for producing standard
fasteners such as bolts, screws, nuts, rivets, and pins.etc

Hexagon socket black zinc plated(also known as a black galvanized hex socket screw or black zinc Allen bolt) is a type of fastener with a hexagonal recess (internal drive) and a black galvanized coating for corrosion resistance and aesthetics. Below is a detailed description:

1. Material & Construction

• Base Metal: Typically made from carbon steel, alloy steel, or stainless steel for strength.

• Black Galvanized Coating: Achieved through zinc plating with a black chromate or black oxide finish, providing corrosion resistance and a dark, matte-black appearance.

2. Common Applications

• Machinery & Automotive: Used in engines, transmissions, and structural assemblies where a clean, corrosion-resistant fastener is needed.

• Electronics & Appliances: Provides a secure, low-profile fastening solution.

• Furniture & Construction: Offers a discreet yet durable fastening method.

• Hexagon socket black zinc plated

3. Advantages Over Standard Screws

• Higher Torque Capacity: The internal hex design allows for greater tightening force without stripping.

• Space-Saving: No protruding head, making it ideal for tight spaces.

• Enhanced Durability: Black galvanized coating resists moisture, chemicals, and wear better than plain steel.

4. Maintenance & Considerations

• Avoid Over-Tightening: The hex socket can strip if excessive force is applied.

• Limited Reusability: The black coating may wear off if frequently removed/reinstalled.

• Compatibility: Ensure correct thread size, pitch, and socket size (e.g., 4mm Allen key for M6 screw).

Conclusion

Black galvanized inner hexagon screws are a durable, corrosion-resistant, and visually appealing fastening solution, widely used in industries where both function and aesthetics matter. They are particularly favored in automotive, machinery, and high-end consumer products due to their strength and sleek appearance.