PEEK Slotted Countersunk Screw
PEEK slotted countersunk screw is a high-performance engineering plastic fastener designed for precision assemblies requiring excellent chemical resistance, electrical insulation, and lightweight structure. The PEEK slotted countersunk screw is manufactured from polyether ether ketone (PEEK), a premium thermoplastic known for outstanding mechanical stability and thermal resistance.
The PEEK slotted countersunk screw is widely used in aerospace systems, medical devices, semiconductor equipment, and high-end electronic assemblies where metal fasteners may cause conductivity, corrosion, or weight issues. Its slotted drive and countersunk head design allow smooth flush installation in compact precision structures.

Product Overview
The PEEK slotted countersunk screw is designed for applications requiring non-metallic fastening solutions with high dimensional stability. Its countersunk head ensures a flush surface finish, while the slotted drive provides simple manual installation in precision equipment.
This PEEK slotted countersunk screw performs exceptionally well in corrosive, high-temperature, and electrically sensitive environments. Unlike metal fasteners, it does not corrode, conduct electricity, or generate magnetic interference, making it ideal for advanced engineering systems.
As a specialized industrial fastener, it is commonly used in OEM manufacturing where reliability, cleanliness, and material compatibility are critical.
Product Specifications
| Item | Description |
|---|---|
| Product Name | PEEK Slotted Countersunk Screw |
| Material | PEEK (Polyether Ether Ketone) |
| Head Type | Countersunk (Flat Head 90°) |
| Drive Type | Slotted |
| Thread Type | Metric / UNC / Custom |
| Diameter Range | M2–M12 |
| Length Range | 4mm–80mm |
| Color | Natural Beige / Black (optional) |
| Density | ~1.30 g/cm³ |
| Operating Temperature | -50°C to 260°C |
| Electrical Properties | Excellent insulation |
| Chemical Resistance | Excellent |
| Packaging | Anti-static bag / carton / OEM packaging |
| Customization | Size, color, thread available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | ~90–100 MPa |
| Flexural Strength | ~140–160 MPa |
| Hardness | Shore D 85–88 |
| Melting Point | ~343°C |
| Continuous Service Temperature | Up to 260°C |
| Dielectric Strength | High insulation performance |
| Water Absorption | Very low (<0.1%) |
| Chemical Resistance | Excellent (acids, oils, solvents) |
Materials and Manufacturing Process
The PEEK slotted countersunk screw is manufactured using precision polymer processing techniques to ensure dimensional accuracy and performance stability.
- Raw material selection: High-grade PEEK resin
- Injection molding / CNC machining: Formation of screw body
- Thread forming: Precision machining or molded threads
- Annealing: Improves dimensional stability
- Surface finishing: Optional polishing or coating
- Inspection: Dimensional and mechanical testing
- Cleaning: Contamination-free processing for high-purity use
- Packaging: Anti-static and moisture-controlled packaging
Each PEEK slotted countersunk screw is produced under strict control to meet high-end industrial and scientific application requirements.
Applications of the Product
The PEEK slotted countersunk screw is widely used in advanced technical industries:
- Semiconductor equipment: Wafer handling systems
- Medical devices: Imaging and surgical instruments
- Aerospace: Lightweight structural assemblies
- Electronics: PCB and insulating assemblies
- Chemical industry: Corrosion-resistant equipment
- Automation systems: Precision mechanical structures
- Laboratory equipment: Analytical instruments
- Marine engineering: Anti-corrosion fastening systems
Its non-metallic nature makes it ideal for environments requiring electrical insulation and chemical stability.
Why Choose This Product
- Excellent high-temperature resistance up to 260°C
- Outstanding chemical and corrosion resistance
- Lightweight structure reduces system weight
- High electrical insulation performance
- Non-magnetic and non-conductive material
- Suitable for precision engineering applications
- Stable dimensional performance under load
- OEM customization available
- Ideal for high-end industrial systems
The PEEK slotted countersunk screw is a premium solution for engineers seeking advanced polymer fastening components.
Why Choose Flybear
Flybear provides professional manufacturing and supply of high-performance industrial fasteners, including advanced polymer-based components.
- Precision machining and molding capabilities
- Custom engineering support for special materials
- Stable OEM production for industrial applications
- Strict quality inspection system
- Global export experience
- Technical consultation for material selection
Flybear supports industries requiring specialized fastening solutions for high-performance environments.
Quality Inspection and Control
Quality assurance is strictly implemented for every batch:
- Raw material purity testing
- Dimensional accuracy inspection
- Tensile and flexural strength testing
- Thermal resistance verification
- Chemical resistance sampling tests
- Thread fit and gauge inspection
- Surface quality inspection
- Packaging integrity control
All production follows ISO-based quality management principles for consistency and reliability.
Selection Guide
When selecting a PEEK slotted countersunk screw, consider:
- Operating temperature range
- Chemical exposure conditions
- Load-bearing requirements
- Electrical insulation needs
- Thread size and length
- Installation environment
Proper selection ensures optimal performance and long service life.
FAQ
1. What is PEEK material?
PEEK is a high-performance thermoplastic with excellent heat and chemical resistance.
2. Can PEEK screws replace metal screws?
Yes, in applications requiring insulation, corrosion resistance, or lightweight design.
3. Are PEEK screws strong enough?
They are suitable for medium-load applications and precision assemblies.
4. Do they conduct electricity?
No, PEEK is an excellent electrical insulator.
5. Can custom sizes be produced?
Yes, Flybear supports full customization of dimensions and specifications.
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.




