PC Socket Head Cap Screw
PC socket head cap screw is a high-performance engineering plastic fastener made from polycarbonate (PC), designed for applications requiring high impact resistance, electrical insulation, transparency options, and lightweight structural fastening. The PC socket head cap screw features a cylindrical head with an internal hex (Allen) drive, enabling high torque installation and stable fastening performance in precision assemblies.
The PC socket head cap screw is widely used in electronics, optical equipment, automotive interior systems, transparent housings, and industrial plastic structures where metal fasteners may cause corrosion, conductivity, or weight issues.

Product Overview
The PC socket head cap screw is engineered for compact, high-strength plastic fastening applications. Its internal hex drive allows precise torque control using Allen keys, making it suitable for automated assembly and precision engineering environments.
This PC socket head cap screw is commonly used in systems requiring insulation, corrosion resistance, and lightweight design. Polycarbonate material provides significantly higher impact resistance than PP and PVC, making it suitable for demanding industrial applications.
As a reliable industrial plastic fastener, it is widely applied in OEM manufacturing and modern engineering systems.
Product Specifications
| Item | Description |
|---|---|
| Product Name | PC Socket Head Cap Screw |
| Material | Polycarbonate (PC) |
| Head Type | Cylindrical Head |
| Drive Type | Internal Hex (Allen) |
| Thread Type | Metric Machine Thread / Self-Tapping (optional) |
| Diameter Range | M3–M12 |
| Length Range | 6mm–100mm |
| Color | Transparent / Black / Custom |
| Density | ~1.20 g/cm³ |
| Electrical Conductivity | Non-conductive |
| Packaging | Bag / carton / OEM packaging |
| Customization | Size, color, thread type available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | 55–70 MPa |
| Impact Resistance | Excellent (high toughness) |
| Heat Resistance | Up to 120°C |
| Chemical Resistance | Good (mild acids, oils) |
| Electrical Insulation | Excellent |
| Water Absorption | Low |
| Dimensional Stability | Good |
| Manufacturing Standard | Industrial OEM specification |
Materials and Manufacturing Process
The PC socket head cap screw is manufactured using precision injection molding and controlled processing technology to ensure stable performance and dimensional accuracy.
- Raw material selection: High-grade polycarbonate resin
- Drying process: Moisture control before molding
- Injection molding: Formation of cylindrical head structure
- Internal hex forming: Precision Allen drive structure
- Thread forming: Molded or secondary processed threads
- Cooling and stabilization: Reduces internal stress
- Trimming: Removal of flash and excess material
- Inspection: Dimensional, mechanical, and visual testing
- Packaging: Clean and protective packaging
Each PC socket head cap screw is produced under strict quality control to ensure consistent industrial performance.
Applications of the Product
PC socket head cap screws are widely used in:
- Electronics: Device housings and internal assemblies
- Optical equipment: Precision structural components
- Automotive: Interior trims and lightweight assemblies
- Industrial machinery: Plastic structural systems
- Medical devices: Non-metallic equipment components
- Consumer electronics: Compact enclosure fastening
- Smart devices: Precision assembly systems
Their internal hex design makes them ideal for high-torque and precision installation environments.
Why Choose This Product
- High impact resistance polycarbonate material
- Internal hex drive for stable torque transmission
- Non-conductive and electrically safe
- Compact cylindrical head design
- Lightweight and corrosion-free structure
- Better performance than PP and PVC materials
- Heat resistance up to 120°C
- OEM customization support
- Stable performance in industrial environments
The PC socket head cap screw provides a strong balance of durability, precision, and insulation performance.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and engineering plastic components for global OEM applications.
- Advanced injection molding capability
- Stable mass production for industrial supply chains
- Custom engineering support for plastic fasteners
- Strict quality inspection and control systems
- Global export experience in fastener manufacturing
- Technical consultation for material selection
Flybear delivers reliable fastening solutions for electronics, automotive, and industrial plastic applications worldwide.
Quality Inspection and Control
Strict quality control ensures stable product performance:
- Raw material resin testing
- Dimensional accuracy inspection
- Internal hex fit testing
- Mechanical strength testing
- Impact resistance validation
- Heat resistance testing
- Surface quality inspection
- Packaging verification
All processes follow ISO-based quality management standards.
Selection Guide
When selecting PC socket head cap screws, consider:
- Load and torque requirements
- Installation space constraints
- Temperature environment
- Chemical exposure conditions
- Electrical insulation needs
- Size and thread specifications
Proper selection ensures long-term reliability and performance.
FAQ
1. What is a PC socket head cap screw used for?
It is used for high-strength and corrosion-resistant fastening in plastic and electronic assemblies.
2. Is PC stronger than PVC or PP?
Yes, PC has higher impact resistance and mechanical strength.
3. Can it be used in electronics?
Yes, it is non-conductive and widely used in electronic systems.
4. Can it be transparent?
Yes, polycarbonate can be produced in transparent grades.
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.




