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Jiali Machine Thread Screws in Smartwatch Mainboard Assembly
ZHUHAI JIALI HARDWARE CO., LTD.
Jiali Machine Thread Screws in Smartwatch Mainboard Assembly
In ultra-thin consumer electronics like Apple Watch and Samsung Galaxy Watch, the assembly reliability of M1.0–M1.4 machine thread screws is critical for yield control. Jiali PMS-series uses micron-level thread rolling to achieve no-cam-out assembly on 0.3mm PCB boards.
1. Key Parameters (ISO 965-1 Class 6g)
| Size | Pitch (mm) | Min. Tensile Strength (N) | Recommended Torque (N·m) | Compatible Materials |
|---|---|---|---|---|
| M1.0 | 0.25 | ≥320 | 0.03–0.05 | Aluminum (0.3–0.5mm), PCB substrate |
| M1.2 | 0.25 | ≥480 | 0.04–0.06 | Aluminum (0.4–0.6mm), Stainless Steel (0.3mm) |
| M1.4 | 0.3 | ≥650 | 0.05–0.08 | Aluminum (0.5–0.8mm), Cold Rolled Steel (0.4mm) |
2. Apple Watch S9 Validation Report (SZ2026-PMS-01)
• Standard: GB/T 2423.10-2019
• Condition: 10⁶ vibration cycles (5–500 Hz, 15g acceleration)
• Result: Zero loosening, zero cam-out, zero panel cracking
3. Jiali PMS Series Advantages
✓ Micron-level thread precision (Ra ≤ 0.2μm)
✓ 100% automated optical inspection
✓ Surface options: RoHS-compliant trivalent chromium, Dacromet® (DIN 50961)
✓ Customization: Non-standard lengths, special head shapes
All Jiali machine thread screws undergo full-spectrum ISO 965-1 testing. Torque-tensile curves provided per batch.
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ZHUHAI JIALI HARDWARE CO., LTD. · Precision Small Screw Manufacturer · Est. 2008