PA66 Slotted Countersunk Screw
The PA66 Slotted Countersunk Screw is a lightweight engineering fastener designed for non-metallic assemblies, electrical insulation systems, and corrosion-free installation environments. As a specialized industrial fastener, the PA66 Slotted Countersunk Screw provides reliable fastening performance while offering excellent electrical insulation, chemical resistance, and low weight advantages.
In modern manufacturing, the PA66 Slotted Countersunk Screw is widely used in electronics, appliances, automotive interiors, and lightweight structural assemblies. Compared with traditional stainless steel hex bolt or metal stainless steel fasteners, this nylon-based screw eliminates conductivity risks and prevents galvanic corrosion in sensitive applications.
The PA66 Slotted Countersunk Screw is especially suitable for OEM designs requiring insulation, weight reduction, and cost-efficient mass production.

Product Overview
The PA66 Slotted Countersunk Screw is manufactured from high-quality PA66 (polyamide 66), a strong engineering plastic known for its excellent mechanical strength, thermal stability, and chemical resistance. Its countersunk head design allows flush installation, ensuring a smooth surface finish after assembly.
The slotted drive enables easy installation using standard tools, making the PA66 Slotted Countersunk Screw a practical choice for electronic enclosures and precision plastic assemblies.
As part of modern OEM fasteners and non-metal fastening systems, the PA66 Slotted Countersunk Screw provides a safe and durable solution for applications where metal fasteners are not suitable.
Product Specifications
| Item | Specification |
|---|---|
| Product Name | PA66 Slotted Countersunk Screw |
| Material | PA66 (Nylon 66) |
| Screw Type | Machine / Self-Tapping (Optional) |
| Head Type | Countersunk Head |
| Drive Type | Slotted |
| Thread Type | Metric / Self-Tapping |
| Diameter Range | M2 – M8 |
| Length Range | 4 mm – 50 mm |
| Surface Finish | Natural Nylon / Black / Custom Color |
| Electrical Property | Insulated (Non-Conductive) |
| Strength Grade | Engineering Plastic Grade |
| Packaging | Bag / Box / OEM Packaging |
| Customization | Available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | ≥ 70–90 MPa |
| Yield Strength | Medium Elastic Strength |
| Density | 1.14 g/cm³ |
| Corrosion Resistance | Excellent (Acids, Alkalis, Moisture) |
| Operating Temperature | -40°C to 120°C |
| Electrical Insulation | Excellent (Non-Conductive) |
| Flame Resistance | Optional (UL94 V-2 / V-0 grades) |
| Manufacturing Standard | Industrial OEM Standard |
Materials and Manufacturing Process
The PA66 Slotted Countersunk Screw is produced through a precision molding and forming process to ensure consistent quality and performance.
- Raw material selection: High-grade PA66 nylon resin
- Injection molding: Precision forming of screw body and head
- Thread forming: Integrated molding or post-threading process
- Cooling stabilization: Ensures dimensional accuracy
- Surface treatment: Optional anti-UV or flame-retardant modification
- Slotted drive formation: Precision tooling for slot accuracy
- Inspection: Dimensional and mechanical testing
- Packaging: Anti-deformation protective packaging
This ensures the PA66 Slotted Countersunk Screw meets strict requirements for industrial fasteners used in electrical and lightweight engineering systems.
Applications of the Product
The PA66 Slotted Countersunk Screw is widely used in industries requiring insulation and lightweight fastening solutions:
- Electronics industry: Circuit boards and housings
- Electrical equipment: Insulated assembly systems
- Automotive interiors: Lightweight trim and panels
- Home appliances: Plastic housing assemblies
- Communication equipment: Non-conductive fastening systems
- Medical devices: Lightweight and corrosion-free assembly
- Industrial equipment: Plastic structure connections
- Lighting systems: LED housing assembly
- Consumer products: Durable plastic fastening solutions
Its non-conductive nature makes it a safer alternative to metal fasteners like DIN912 socket head cap screws in electrical applications.
Why Choose This Product
- Lightweight PA66 nylon material
- Excellent electrical insulation performance
- Strong resistance to corrosion and chemicals
- Flush countersunk head design
- Cost-effective mass production solution
- Safe for electronic applications
- Non-magnetic and non-conductive properties
- OEM customization support
- Suitable for high-volume assembly lines
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fastening solutions and engineering plastic fasteners.
- Advanced injection molding production capability
- Strict quality control system
- Strong OEM customization support
- Stable mass production capacity
- Global export experience
- Engineering technical consultation services
Flybear provides reliable industrial fasteners and plastic fastening solutions for global industries.
Quality Inspection and Control
Each PA66 Slotted Countersunk Screw undergoes strict quality inspection:
- Raw material performance testing
- Dimensional accuracy inspection
- Tensile strength testing
- Electrical insulation testing
- Temperature resistance testing
- Flame retardancy verification (if required)
- Surface and slot inspection
- Packaging quality inspection
All processes comply with ISO-based quality management standards.
Selection Guide
When selecting a PA66 Slotted Countersunk Screw, consider:
- Load requirements (light to medium duty)
- Electrical insulation needs
- Environmental temperature range
- Chemical exposure conditions
- Thread type (self-tapping or machine thread)
- Size compatibility with assembly design
Proper selection ensures safe and stable performance in non-metallic applications.
FAQ
1. What is PA66 material?
PA66 is a strong engineering plastic (nylon 66) with high strength and good heat resistance.
2. Can PA66 screws replace metal screws?
Yes, in low-load and insulation-required applications.
3. Are PA66 screws electrically insulated?
Yes, they are fully non-conductive.
4. Do they resist corrosion?
Yes, PA66 resists moisture, acids, and alkalis.
5. Can custom colors and sizes be made?
Yes, Flybear supports full OEM 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.
For quotation, customization, and technical support, please Contact Us.




