Dongguan Guanbiao Hardware Products Co., LTD
Dongguan Guanbiao Hardware Products Co., LTD Innovation is the foundation, quality is the life, pragmatism is the purpose, and efficiency is the goal. Customer satisfaction is our ultimate goal.
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Phillips Pan Head Screw Main advantages:
MICRO PRECISION - Manufactured using precision CNC machining with micron tolerances (±0.02mm) ensuring a perfect fit on precision electronic components.
PREMIUM MATERIALS - Aerospace grade alloys (Stainless Steel 304, 316L, Aluminum, Titanium Ti-6Al-4V) with anti-corrosion coating and EMI shielding properties.
| Property | Description |
|---|---|
| Material | Stainless Steel,carbon steel |
| Size | M1.0-M20 |
| Head Type | Pan, Flat, Round, Hex |
| Drive Type | Phillips, Slotted, Torx |
| Thread Type | Machine, Self-Tapping |
| Finish | Plain, Zinc Plated, Black Oxide,Zinc-Nickel Alloy |
| Length Range | 2.0mm-300.0mm |
| Application | Electronics, Medical Devices, Watches |
| Tolerance | +/- 0.001 inch |
| Certification | RoHS, ISO 9001:2015 |
| Customization | Available upon request |
Vibration Resistance - Patent-pending thread geometry reduces loosening under 50G vibration (MIL-STD-202H certified).
Without additional treatments: Baseline zinc-nickel alloy coating (Zn-Ni 12-15%) remains stable at ≤120°C
Failure mechanisms:
>150°C: Coating grain structure coarsens, reducing corrosion resistance
>200°C: Microcracks form due to CTE mismatch between coating and substrate (e.g., steel, ~30% difference)
250°C: Coating hardness drops by 40% (from 450 HV to 270 HV)
| Treatment | Temperature Limit Boost | Core Mechanism | Typical Applications |
|---|---|---|---|
| Micro-arc Oxidation (MAO) | 300-350°C | Al₂O₃ ceramic layer (10-30μm thick) | Turbocharger fasteners |
| PVDF Coating | 200-220°C | Heat-resistant polymer modification | PV inverter housings |
| Nickel Sealing | 180°C | Coating porosity reduced to <0.1% | Marine electronics |
| Graphene Composite Plating | 250°C (short-term) | Coating thermal conductivity ↑80 W/m·K | 5G base station cooling modules |
Material compatibility:
Avoid direct contact with aluminum alloys (CTE=23.6); use Invar alloy (CTE=1.6) spacers
Torque attenuation compensation:
Reduce preload by 15% per 100°C rise (per VDI 2230 standard)
Hydrogen embrittlement risk:
Post-plating baking at 200-220°C for 4 hours (to relieve residual stress)
| Parameter | MAO Zn-Ni Screw (Steel Substrate) | Stainless Steel 316L |
|---|---|---|
| Max Temperature | 350°C | 800°C |
| Salt Spray Test (hours) | 2000+ | 500 |
| Electrical Conductivity | Insulating (>10¹² Ω·cm) | Conductive |
| Cost Increase | +40% vs. standard Zn-Ni | Baseline |
For >350°C:
Inconel 718 with aluminum coating (950°C resistance, high cost)
Ceramic screws (Al₂O₃/Si₃N₄, 1600°C resistance but brittle)
Cost-performance balance:
Dual-layer coating: Zn-Ni base + PVD CrN coating (450°C resistance)
Surface-treated zinc-nickel alloy screws achieve 120-350°C practical temperature resistance (process-dependent), but they remain medium-temperature solutions. For long-term >300°C or thermal cycling scenarios, advanced material systems are recommended. Would you like further optimization of design parameters?