Aluminum nuts black oxide

The fastening and opening of bolts and nuts adopts non-standard design, and the matching
non-standard tools are used to solve the opening and fastening problems. In general, other
wrenches cannot be inserted. In the appearance design of nuts and bolts, non-standard slotting,
opening or pentagonal, heptagonal, nine-corner or custom-made corresponding groove tools
have played a very good anti-theft effect

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。

Aluminum Nut with Black Oxide Coating – Detailed Description

An Aluminum nuts black oxide finish is a lightweight, corrosion-resistant fastener designed for applications where weight savings, aesthetics, and moderate environmental protection are important. The black oxide coating provides a dark, matte surface that reduces glare and enhances appearance while offering some functional benefits.

1. Material Composition

• Base Metal: Aluminum alloy (common grades include 6061-T6, 7075-T6, or 2024-T3).

• Coating: Black oxide (a chemical conversion coating) formed by reacting aluminum with an oxidizing solution to create a thin, dark layer (Fe₃O₄ in steel, but aluminum black oxide is less common and may involve alternative processes).

2. Key Characteristics

✔ Lightweight – Significantly lighter than steel, ideal for weight-sensitive applications.
✔ Moderate Corrosion Resistance – Better than bare aluminum but less than anodized or plated nuts.

5. Common Applications

• Automotive & Racing (engine components, body panels).

• Electronics & Optics (non-reflective, conductive fasteners).

Conclusion

A Aluminum nuts black oxide is an excellent choice for lightweight, non-reflective, and moderately corrosion-resistant fastening needs. It’s widely used in aerospace, automotive, and electronics but may not be suitable for harsh environments without additional protection.