Micro Precision Screw Selection & Installation Guide for Electronics & Medical Devices

Micro screw (M0.6–M5) failures mostly result from wrong selection or improper installation; this guide covers selection, installation and troubleshooting for reliable assembly。

1. Selection by application scenario

3C electronics: M0.8–M2 Phillips/Torx stainless steel with anti-loosening; Medical: 316L/titanium with ±0.01mm tolerance; Eyewear: brass/stainless steel for ultra-thin housing。

2. Material and surface treatment options

General: 304 stainless steel; Corrosion resistance: 316L/titanium; Conductivity: brass; Anti-loosening: nylon patch; Wear resistance: nickel/zinc-nickel coating。

3. Key installation rules

1. Pilot hole for hard materials to prevent cracking; 2. Torque control (0.05–0.5N·m) with precision tools; 3. Anti-loosening patch or washer for vibration; 4. Insulation washer to avoid galvanic corrosion。

4. Troubleshooting common issues

Cam-out: use Torx/hex socket; Breakage: reduce torque or upgrade alloy; Rust: switch to 316L or passivation。