PA66 Hex Socket Head Cap Screw
PA66 hex socket head cap screw is a high-performance engineering plastic fastener made from polyamide 66 (Nylon 66), designed for lightweight, corrosion-resistant, and electrically insulating fastening applications. The PA66 hex socket head cap screw features a cylindrical head with an internal hex drive, allowing high torque installation while maintaining excellent mechanical stability in plastic and non-metallic assemblies.
The PA66 hex socket head cap screw is widely used in electronics, automotive interior systems, chemical equipment, and precision industrial assemblies where metal fasteners may cause corrosion, conductivity issues, or unnecessary weight.
Product Overview
The PA66 hex socket head cap screw is engineered for applications requiring a balance of strength, flexibility, and chemical resistance. Nylon 66 provides higher mechanical strength and better heat resistance compared to standard nylon materials, making it suitable for demanding industrial environments.
This PA66 hex socket head cap screw is commonly used in assemblies requiring repeated installation, vibration resistance, and long-term durability in corrosive or electrically sensitive environments. The internal hex design ensures stable torque transmission and prevents stripping during tightening.
As a reliable industrial plastic fastener, it is widely used in OEM manufacturing and modern lightweight engineering systems.
Product Specifications
| Item | Description |
|---|---|
| Product Name | PA66 Hex Socket Head Cap Screw |
| Material | Polyamide 66 (PA66 / Nylon 66) |
| Head Type | Cylindrical Head |
| Drive Type | Internal Hex (Socket) |
| Thread Type | Metric Machine Thread / Self-Tapping (optional) |
| Diameter Range | M3–M12 |
| Length Range | 6mm–100mm |
| Color | Natural White / Black / Custom |
| Density | ~1.14 g/cm³ |
| Electrical Conductivity | Non-conductive |
| Packaging | Bag / carton / OEM packaging |
| Customization | Size, color, reinforced fiber grades available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | 70–90 MPa |
| Flexural Strength | Moderate to high |
| Heat Resistance | Up to 120°C continuous use |
| Chemical Resistance | Excellent (acids, alkalis, oils) |
| Water Absorption | Moderate (material characteristic) |
| Electrical Insulation | Excellent |
| Impact Resistance | Good |
| Manufacturing Standard | Industrial OEM specification |
Materials and Manufacturing Process
The PA66 hex socket head cap screw is manufactured using precision injection molding technology with strict process control to ensure stability and mechanical performance.
- Raw material selection: High-grade PA66 nylon resin
- Drying process: Moisture removal to ensure dimensional stability
- Injection molding: Formation of hex socket head structure
- Thread forming: Molded or secondary processed threads
- Cooling and stabilization: Reduces internal stress
- Trimming: Removal of excess material and flash
- Inspection: Dimensional and mechanical testing
- Packaging: Clean and protective industrial packaging
Each PA66 hex socket head cap screw is produced under controlled conditions to ensure consistent performance.
Applications of the Product
PA66 hex socket head cap screws are widely used in:
- Electronics: Circuit boards and insulating assemblies
- Automotive: Interior components and lightweight structures
- Chemical equipment: Corrosion-resistant systems
- Electrical systems: Non-conductive fastening points
- Industrial machinery: Lightweight mechanical assemblies
- Medical devices: Clean and corrosion-free structures
- Consumer products: Plastic housing systems
Their non-metallic properties make them ideal for advanced engineering applications.
Why Choose This Product
- Excellent electrical insulation performance
- High chemical resistance to acids and alkalis
- Lightweight structure reduces system weight
- Internal hex drive for stable torque application
- Good mechanical strength for plastic fasteners
- Suitable for corrosive and humid environments
- Available in reinforced fiber grades (optional)
- OEM customization support
- Cost-effective engineering plastic solution
The PA66 hex socket head cap screw provides reliable performance in modern lightweight and corrosion-sensitive systems.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and engineering plastic components for global OEM applications.
- Advanced injection molding and tooling capability
- Stable mass production for industrial supply chains
- Custom engineering support for nylon fasteners
- Strict quality inspection and testing systems
- Global export experience in fastener manufacturing
- Technical consultation for application optimization
Flybear delivers reliable fastening solutions for electronics, automotive, and industrial plastic industries.
Quality Inspection and Control
Strict quality control ensures stable product performance:
- Raw material resin testing
- Moisture content control
- Dimensional accuracy inspection
- Tensile and flexural strength testing
- Heat resistance validation
- Thread fit and torque testing
- Surface defect inspection
- Packaging quality verification
All processes follow ISO-based quality management systems.
Selection Guide
When selecting PA66 hex socket head cap screws, consider:
- Load and torque requirements
- Temperature environment
- Chemical exposure conditions
- Electrical insulation needs
- Frequency of assembly/disassembly
- Size and thread specifications
Proper selection ensures long-term reliability and safe operation.
FAQ
1. What is PA66 used for in screws?
It provides high strength, insulation, and chemical resistance for engineering plastic fasteners.
2. Is PA66 stronger than PP?
Yes, PA66 has significantly higher mechanical strength and heat resistance.
3. Can PA66 screws be used in electrical systems?
Yes, they are fully non-conductive and widely used in electronics.
4. Do PA66 screws absorb water?
Yes, slightly, which is normal for nylon materials.
5. Can custom sizes be produced?
Yes, Flybear supports full customization.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
Contact us for quotation, customization, and technical support via Contact Us.
