Oil plug screw black oxide

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

A black oxide oil plug screw is a high-quality, corrosion-resistant drain plug designed for securing an engine’s oil pan while providing enhanced durability and a sleek, low-reflective black finish. Commonly used in automotive, motorcycle, and industrial applications, it combines functionality with an aesthetic upgrade over standard silver-colored plugs.

Key Characteristics

1. Black Oxide Finish

• Process: Created through a chemical conversion coating that bonds with the metal surface.

• Appearance: Smooth, uniform matte black finish.

• Benefits:

  • Improved corrosion resistance compared to untreated steel.

  • Reduced light glare, ideal for performance or custom builds.

  • Slight oil retention properties for minor rust prevention. Oil plug screw black oxide

2. Material & Durability

• Base Metal: High-carbon or alloy steel for strength.

• Magnetic Option: Some versions include a magnetic tip to trap metal particles.

3. Design Features

• Head Types:

  • Allen/Hex Key Drive: Low-profile, sleek appearance.

  • Square Drive: Heavy-duty applications.

• Sealing:

  • Requires a crush washer (often included) for a tight seal.

  • Some models feature an integrated O-ring groove for double sealing. Oil plug screw black oxide

4. Performance Benefits

✔ Moderate Rust Protection – Better than raw steel but less than zinc or stainless.
✔ Aesthetic Upgrade – Popular in blacked-out or custom engine bays.

Common Applications

• Automotive: Cars, trucks, SUVs (especially modified/show vehicles).

• Industrial/Marine Equipment: Resists moisture in harsh environments.

Installation Tips

1. Always use a new crush washer to prevent leaks.

2. Avoid over-tightening to prevent oil pan thread damage.

3. Inspect periodically for coating wear or rust in harsh climates. Oil plug screw black oxide