Safety Wire Bolt electroplating black

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

Safety Wire Bolt Electroplating Black – Overall Description

1. Overview

A safety wire bolt (also known as a lockwire bolt) is a specialized fastener designed to be secured with safety wire to prevent loosening due to vibration or movement. Electroplating black is a surface treatment applied to the bolt for corrosion resistance, aesthetic appeal, and improved durability.

2. Electroplating Black Process

• Material: Typically applied to steel, stainless steel, or other metals.

• Coating Type: Usually involves zinc electroplating with a black chromate conversion coating (Zn + Black Passivation).

• Process Steps:

  1. Cleaning & Degreasing – Removes oils and contaminants.

  2. Acid Pickling – Eliminates rust and scales.

  3. Electroplating (Zinc Coating) – Deposits a layer of zinc for corrosion resistance.

3. Key Features & Benefits

• Corrosion Resistance: Protects against rust and environmental exposure.

• Aesthetic Appeal: Provides a uniform, matte-black finish.

• Safety Wire Bolt electroplating black

• Durability: Extends bolt lifespan in harsh conditions (e.g., aerospace, automotive, marine).

• Electrical Conductivity: Maintains grounding capability (unlike some polymer coatings).

• Temperature Resistance: Suitable for moderate-high temperature applications.

4. Common Applications

• Aerospace: Engine components, landing gear, and critical fasteners.

• Military & Defense: Firearms, vehicle assemblies.

• Automotive & Racing: High-vibration environments.

• Industrial Machinery: Equipment requiring secure, vibration-resistant fastening.

• Safety Wire Bolt electroplating black

6. Considerations

• Compatibility: Must not interfere with torque or wire-locking function.

• Inspection: Coating should be uniform, free of peeling, and pass salt spray testing (e.g., 96+ hours ASTM B117).

Conclusion

A safety wire bolt with electroplated black finish combines mechanical security with enhanced corrosion protection, making it ideal for critical applications where reliability and longevity are essential.