Hexagon socket black zinc plated

冷镦加工是一种少切削或无切削的压力加工新工艺
金屬。它是一種利用金屬在下列因素作用下產生塑性變形的加工方法
外力作用下，在模具的幫助下，重新分配和轉移金屬的體積，以形成
所需的零件或坯料。冷镦工艺最适合生产标准的
螺栓、螺絲、螺帽、鉚釘和銷等緊固件

Hexagon socket black zinc plated(also known as a black galvanized hex socket screw 或 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.