Custom Popular Machined Micro Screws Miniature Threaded Parts for Electronics Assembly

Beschreibung

What are Micro Screws?

Micro screws are ultra-small fasteners typically ranging from 0.3mm to 5mm in diameter, designed for precision applications where space is extremely limited. These screws are manufactured with tight tolerances to ensure reliable performance in delicate assemblies. Unlike standard screws, micro screws require specialized tools for installation due to their miniature size and often feature unique drive types to prevent stripping.

Materials of Micro Screws

1. Stainless Steel (304, 316, 410) – Corrosion-resistant, ideal for medical and marine applications.

2. Alloy Steel (A2/A4, Grade 8/10) – High strength for aerospace and automotive uses.

3. Titanium (Ti-6Al-4V) – Lightweight, biocompatible, and corrosion-proof (medical implants).

4. Brass (C360, C260) – Conductive and non-magnetic, common in electronics.

5. Aluminum (6061, 7075) – Lightweight but lower strength, used in consumer electronics.

6. Plastic (PEEK, Nylon, PTFE) – Non-conductive, chemical-resistant, and MRI-compatible.

Surface Treatments

• Passivation (Stainless Steel/Titanium) – Enhances corrosion resistance.

• Electroplating (Gold, Nickel, Zinc) – Improves conductivity and solderability (PCB screws).

• Black Oxide – Reduces glare and provides mild corrosion resistance.

• Electropolishing – Creates ultra-smooth surfaces for cleanroom applications.

• PTFE Coating – Low-friction, chemical-resistant (medical and lab equipment).

Specifications

• Diameter: 0.3mm–5mm (e.g., M0.6, M1.2, M2, #0-80, #2-56).

• Head Types: Pan, flat, socket cap, hex, Torx® (T1–T5 for micro sizes).

• Thread Pitch: Ultra-fine (e.g., 0.35mm pitch for M1.4) for secure fastening in thin materials.

• Length: 1mm–20mm (custom lengths available).

• Drive Types: Phillips #000, JIS B 000, Torx T1–T5, Hex 0.7mm–1.5mm.

• Torque Range: 0.01 Nm–0.5 Nm (requires precision screwdrivers).

Applications

1. Medical Devices – Surgical instruments, implants, dental tools.

2. Electronics – Smartphones, micro cameras, PCB mounting, wearables.

3. Aerospace & Defense – Miniature sensors, drone components, satellites.

4. Optics & Lasers – Lens mounts, fiber alignment, laser housings.

5. Jewelry & Watchmaking – Precision assembly of luxury watches.

Excellent Case: Smartphone Camera Module Assembly

Scenario: A smartphone manufacturer needs M1.4 stainless steel micro screws to secure a high-resolution camera module without adding bulk or risking loosening from daily vibrations.

Solution:

• Micro screws (Stainless Steel 316, electropolished) are used:

  • Diameter: 1.4mm with 0.3mm thread pitch for thin metal threads.

  • Head Type: Torx T2 to prevent stripping during robotic assembly.

  • Coating: Electropolished for smooth insertion and EMI shielding.

Benefits:

• Withstands 50,000+ vibration cycles without loosening.

• Corrosion-resistant from humidity and sweat exposure.

• Precision threads ensure perfect alignment of optical elements.

Result: The screws enable a slimmer smartphone design while maintaining camera stability, ensuring sharp images even under mechanical stress.