アルミニウム・ナット イエローオキサイド

ボルトとナットの締結と開放は、非標準的な設計を採用し、一致する。
非標準の工具は、開口部と締結部の問題を解決するために使用される。一般的に、他の
レンチを挿入することはできません。ナットとボルトの外観デザインでは、非標準のスロット、
開口または五角形、七角形、九角形または特注の対応溝工具
盗難防止効果が非常に高い

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。

アルミニウム ナッツ yellow oxide is a fastener that has been treated with a yellow-colored surface finish, typically through anodizing または chemical conversion coating, to enhance both its appearance and performance. Below is a detailed breakdown:

1. Material

• Made from aluminum (common grades: 6061, 2024, or 7075 for strength and lightweight properties).

2. Yellow Oxidation Process

Anodized Yellow

• Anodizing Type II (Sulfuric Acid Anodizing) – Creates a porous oxide layer, which is then dyed yellow before sealing.

• Hard Anodizing (Type III) – Produces a thicker, more wear-resistant layer, sometimes with a gold-like yellow hue.

• Electrolytic Coloring – Uses metallic salts (e.g., ferric ammonium oxalate) to produce a yellowish-bronze tone.

Chemical Conversion Coating (Alodine/Iridite)

• A cheaper alternative to anodizing, producing a gold-yellow chromate layer (common in military/aerospace specs like MIL-DTL-5541).

• Provides moderate corrosion resistance and improves paint adhesion.

3. Features & Benefits

• 耐食性 – Protects against oxidation and harsh environments.

• Aesthetic & Identification – Bright yellow for color-coding or decorative uses.

• Electrical Conductivity – Chromate coatings retain conductivity; anodizing does not.

• 軽量 – Ideal for applications where weight matters (e.g., aerospace, drones).

4. Common Applications

• Aerospace & Defense – Yellow-chromated nuts for corrosion resistance (e.g., aircraft panels).

• Electronics – Color-coded fasteners in PCBs or machinery.

• Automotive & Bicycles – Custom/high-visibility components.

• Marine Hardware – Saltwater-resistant yellow coatings.

5. Variations in Yellow Finish

• Bright Yellow – Dyed anodizing for vibrant colors.

• Gold-Yellow – Chromate conversion coating (common in MIL specs).

• Matte or Glossy – Surface finish depends on pre-treatment (e.g., etching, polishing).

6. Limitations

• Anodized Yellow – Less UV-stable; may fade over time unless sealed properly.

• Chromate Yellow – Contains hexavalent chromium (restricted in some regions; alternatives like trivalent chromate exist).

• Not for High-Stress Use – Aluminum nuts are weaker than steel in heavy-load scenarios.