Carbon steel oil plug bolt

冷間圧造加工は、切削の少ない、あるいは切削を必要としない新しい圧造加工のひとつである。
金属。の作用による金属の塑性変形を利用した加工法である。
外力を受け、金型の助けを借りて、金属の体積を再分配し、移動させる。
必要な部品やブランクを製造します。冷間圧造工程は、標準的な
ボルト、ネジ、ナット、リベット、ピンなどの留め具。

Carbon steel oil plug bolt are heavy-duty fasteners designed for sealing oil pans, transmission systems, and other fluid compartments in automotive, industrial, and machinery applications. They are known for their high strength, durability, and cost-effectiveness compared to stainless steel or alloy alternatives.

1. Material & Construction

• Base Material: Made from medium/high-carbon steel (e.g., Grade 5, Grade 8, or ASTM A574) for superior tensile strength.

• Surface Treatment: Typically zinc-plated (electro-galvanized), black oxide, or plain oil-finished for basic corrosion resistance.

• スレッドタイプ: Standard metric (M12x1.75, M14x1.5) or SAE (1/2″-20, 3/4″-16) threads, with fine or coarse pitch options.

• Magnetic Properties: Some variants include magnetic tips to capture metal shavings in oil systems.

2. Common Applications

• Automotive Oil Drain Plugs – Used in engine oil pans, differentials, and transmissions.

• 産業機械 – Hydraulic systems, gearboxes, and pump housings.

• Heavy Equipment – Tractors, excavators, and diesel engines.

• Marine & Agricultural Machinery – Where moderate corrosion resistance is sufficient.

3. Maintenance & Considerations

• Torque Properly – Over-tightening can strip threads; use a torque wrench.

• Replace Washers – Crush washers should be replaced after each removal.

• Check for Rust – If uncoated, carbon steel can corrode in wet conditions.

• Thread Compatibility – Ensure correct size (e.g., M12x1.75 for many Japanese cars).

Conclusion

Carbon steel oil plug bolt are strong, economical, and widely used in automotive and industrial applications. While they require protective coatings to resist rust, their durability and affordability make them a popular choice for oil drain and fluid system sealing.