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
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
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Process: Created through a chemical conversion coating that bonds with the metal surface.
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Appearance: Smooth, uniform matte black finish.
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Benefits:
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Improved corrosion resistance compared to untreated steel.
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Reduced light glare, ideal for performance or custom builds.
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Slight oil retention properties for minor rust prevention. Oil plug screw black oxide
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2. Material & Durability
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Base Metal: High-carbon or alloy steel for strength.
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Magnetic Option: Some versions include a magnetic tip to trap metal particles.
3. Design Features
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Head Types:
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Allen/Hex Key Drive: Low-profile, sleek appearance.
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Square Drive: Heavy-duty applications.
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Sealing:
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Requires a crush washer (often included) for a tight seal.
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Some models feature an integrated O-ring groove for double sealing. Oil plug screw black oxide
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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
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Automotive: Cars, trucks, SUVs (especially modified/show vehicles).
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Industrial/Marine Equipment: Resists moisture in harsh environments.
Installation Tips
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Always use a new crush washer to prevent leaks.
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Avoid over-tightening to prevent oil pan thread damage.
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Inspect periodically for coating wear or rust in harsh climates. Oil plug screw black oxide
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