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Ultimate Precision Screws For Electronics Zinc Nickel Alloy Phillips Pan Head Self-Tapping Screws
Product Details:
| Place of Origin: | China |
| Brand Name: | guanbiao |
| Certification: | ISO9001 |
| Model Number: | M2.5*6 |
Payment & Shipping Terms:
| Minimum Order Quantity: | 20000PCS |
|---|---|
| Price: | USD |
| Packaging Details: | Carton + cardboard |
| Delivery Time: | 15-20work days |
| Payment Terms: | T/T |
| Supply Ability: | 2000000Pcs/day |
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Detail Information |
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| DIMENSION: | WE CAN CUSTOMISE TO YOUR DIMENSION | USE: | This Type Of Screw Is Usually Used In Occasions That Require Aesthetics And Anti Disassembly, Such As Electronic Products, Furniture Assembly, Etc. |
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| HEAD STYLE: | Phillips | FINISH: | Zinc-Nickel Alloy |
| SIZE: | M2.5*6 | MATERIAL: | Carbon Steel |
| THREAD: | M2.5 | SINGLE: | 0.3g/pcs |
| HEAD TYPE: | Pan Head | LEAD TIME: | 10~15 Working Days |
| TOOTH LENGTH: | 6mm | ||
| Highlight: | Ultimate Precision Self-Tapping Screws,Electronics Self-Tapping Screws,Zinc-Nickel Alloy Self-Tapping Screws |
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Product Description
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
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Without additional treatments: Baseline zinc-nickel alloy coating (Zn-Ni 12-15%) remains stable at ≤120°C
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Failure mechanisms:
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>150°C: Coating grain structure coarsens, reducing corrosion resistance
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>200°C: Microcracks form due to CTE mismatch between coating and substrate (e.g., steel, ~30% difference)
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250°C: Coating hardness drops by 40% (from 450 HV to 270 HV)
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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
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Material compatibility:
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Avoid direct contact with aluminum alloys (CTE=23.6); use Invar alloy (CTE=1.6) spacers
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Torque attenuation compensation:
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Reduce preload by 15% per 100°C rise (per VDI 2230 standard)
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Hydrogen embrittlement risk:
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Post-plating baking at 200-220°C for 4 hours (to relieve residual stress)
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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
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For >350°C:
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Inconel 718 with aluminum coating (950°C resistance, high cost)
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Ceramic screws (Al₂O₃/Si₃N₄, 1600°C resistance but brittle)
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Cost-performance balance:
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Dual-layer coating: Zn-Ni base + PVD CrN coating (450°C resistance)
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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?