PP Slotted Countersunk Screw
PP slotted countersunk screw is a lightweight engineering plastic fastener made from polypropylene (PP), designed for flush surface installation, corrosion resistance, and electrical insulation. The PP slotted countersunk screw features a flat-head 90° countersunk design combined with a slotted drive, allowing the screw head to sit level with the surface after installation.
The PP slotted countersunk screw is widely used in electronic housings, plastic assemblies, laboratory equipment, and chemical systems where metal fasteners may cause corrosion, conductivity issues, or unnecessary weight.
Product Overview
The PP slotted countersunk screw is engineered for applications requiring a smooth, flush surface finish and non-metallic fastening performance. Its countersunk head ensures the screw does not protrude after installation, improving safety and appearance.
This PP slotted countersunk screw is commonly used in plastic structures and lightweight assemblies where corrosion resistance and insulation are critical. The polypropylene material provides excellent resistance to acids, alkalis, and moisture.
As a reliable industrial plastic fastener, it is widely applied in OEM manufacturing and precision equipment assemblies.
Product Specifications
| Item | Description |
|---|---|
| Product Name | PP Slotted Countersunk Screw |
| Material | Polypropylene (PP) |
| Head Type | Countersunk Head (Flat 90°) |
| Drive Type | Slotted |
| Thread Type | Metric Machine Thread / Self-Tapping (optional) |
| Diameter Range | M3–M12 |
| Length Range | 6mm–80mm |
| Color | Natural White / Black / Custom |
| Density | ~0.90 g/cm³ |
| Electrical Conductivity | Non-conductive |
| Packaging | Bag / carton / OEM packaging |
| Customization | Size, color, thread type available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | 25–40 MPa |
| Flexural Strength | Moderate (PP dependent) |
| Density | 0.90–0.92 g/cm³ |
| Chemical Resistance | Excellent (acids, alkalis, water) |
| Heat Resistance | Up to 90°C continuous use |
| Electrical Insulation | Excellent |
| Water Absorption | Very low |
| Manufacturing Standard | Industrial OEM specification |
Materials and Manufacturing Process
The PP slotted countersunk screw is manufactured using precision injection molding technology to ensure stable quality and accurate geometry.
- Raw material selection: High-grade polypropylene resin
- Drying process: Moisture control before molding
- Injection molding: Formation of countersunk head structure
- Slotted drive forming: Integrated mold design
- Thread forming: Molded or post-processed threading
- Cooling and stabilization: Ensures dimensional accuracy
- Trimming: Removal of excess material and flash
- Inspection: Dimensional and surface quality checks
- Packaging: Clean and protective packaging
Each PP slotted countersunk screw is produced under controlled conditions to ensure stable performance in industrial environments.
Applications of the Product
PP slotted countersunk screws are widely used in:
- Electronics: Plastic housings and device enclosures
- Chemical industry: Acid and alkali-resistant equipment
- Laboratory equipment: Corrosion-free fixtures
- Water treatment systems: Pipeline and filter assemblies
- Medical devices: Lightweight non-metal components
- Consumer products: Flush surface plastic assemblies
- Industrial equipment: Lightweight structural components
Their flush head design makes them ideal for aesthetic and safety-critical applications.
Why Choose This Product
- Flush countersunk head for smooth surface finish
- Excellent chemical and corrosion resistance
- Lightweight polypropylene material
- Non-conductive and safe for electrical use
- Suitable for plastic and lightweight assemblies
- Cost-effective industrial fastening solution
- Custom colors and sizes available
- OEM production support
- Stable performance in corrosive environments
The PP slotted countersunk screw provides a reliable solution for modern lightweight engineering applications.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and engineering plastic components for global OEM markets.
- Advanced plastic injection molding production lines
- Stable mass production capacity
- Custom engineering support for plastic fasteners
- Strict quality inspection system
- Global export experience in industrial fasteners
- Technical consultation for application optimization
Flybear delivers reliable fastening solutions for electronics, chemical equipment, and plastic manufacturing industries.
Quality Inspection and Control
Strict quality control ensures consistent product performance:
- Raw material resin testing
- Dimensional accuracy inspection
- Thread fit testing
- Countersunk angle verification
- Chemical resistance testing
- Heat resistance validation
- Surface appearance inspection
- Packaging quality control
All processes follow ISO quality management systems.
Selection Guide
When selecting PP slotted countersunk screws, consider:
- Load and torque requirements
- Chemical exposure environment
- Temperature conditions
- Plastic compatibility
- Electrical insulation needs
- Size and thread specifications
Proper selection ensures long-term stability and performance.
FAQ
1. What is a PP slotted countersunk screw used for?
It is used for flush installation in plastic and corrosion-resistant assemblies.
2. Why use polypropylene material?
It offers excellent chemical resistance and electrical insulation.
3. Can it replace metal screws?
Yes, in lightweight and non-load-bearing applications.
4. Is it suitable for outdoor use?
Yes, but temperature and UV exposure should be considered.
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.
