Ultimate Precision Screws For Electronics Zinc Nickel Alloy Phillips Pan Head Self-Tapping Screws
Brand Name:guanbiao
Certification:ISO9001
Model Number:M2.5*6
Minimum Order Quantity:20000PCS
Delivery Time:15-20work days
Payment Terms:T/T
Contact Now
Add to Cart
Verified Supplier
Location:
Dongguan Guangdong China
Address:
No. 306, Yangkeng Road, Qiaotou Industrial Zone, Yangkeng Road, Qiaoli Village, Changping Town, Dongguan City, Guangdong Province
Supplier`s last login times:
within 47 hours
Product Details
Company Profile
Product Details
Phillips Pan Head Screw M2.5X6 Zinc Nickel Alloy
Ultra-Precision Electronic Screws: Engineering Excellence for Micro-Scale Applications Advanced Fastening Solutions for the Technology-Driven World
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).
1. Thermal Stability of Conventional Zinc-Nickel Electroplated Screws
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)
2. Enhanced Surface Treatments and Thermal Stability Improvements
| 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 |
3. Critical Considerations for High-Temperature Environments
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)
4. Performance Comparison (MAO-Treated Zn-Ni Screws vs. Stainless Steel)
| 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 |
5. Alternative Recommendations
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)
Ultimate Precision Screws Summary
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?
If you are intresting please visit our webside: www.ss-screws.com
Ultimate Precision Screws For Electronics Zinc Nickel Alloy Phillips Pan Head Self-Tapping Screws
Inquiry Cart
0