PP Slotted Knurled Thumb Screw
PP slotted knurled screw is a lightweight engineering plastic fastening component made from polypropylene (PP), designed for manual tightening applications requiring corrosion resistance, insulation, and easy adjustability. The PP slotted knurled screw combines a slotted drive head with a knurled (knobbed) grip surface, allowing tool-free or screwdriver-assisted installation in plastic assemblies and low-load mechanical systems.
The PP slotted knurled screw is widely used in electronic housings, laboratory equipment, chemical devices, and lightweight industrial assemblies where metal fasteners may cause corrosion, conductivity, or weight issues.
Product Overview
The PP slotted knurled screw is designed for manual adjustment and frequent assembly/disassembly. The knurled outer surface provides improved grip, while the slotted drive allows optional screwdriver tightening.
This PP slotted knurled screw is especially suitable for plastic structures and equipment requiring non-metallic, corrosion-free fastening solutions. Its polypropylene material ensures excellent chemical resistance and electrical insulation.
As a practical industrial plastic fastener, it is widely used in OEM manufacturing and precision lightweight systems.
Product Specifications
| Item | Description |
|---|---|
| Product Name | PP Slotted Knurled Screw |
| Material | Polypropylene (PP) |
| Head Type | Knurled Thumb Head |
| 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 knurled screw is manufactured using precision injection molding technology to ensure consistent quality and functional performance.
- Raw material selection: High-grade polypropylene resin
- Drying process: Moisture control before molding
- Injection molding: Formation of knurled head structure
- Slotted drive forming: Integrated mold shaping
- Thread forming: Molded or post-processed threading
- Cooling and stabilization: Ensures dimensional stability
- Trimming: Removal of flash and excess material
- Inspection: Dimensional and visual quality control
- Packaging: Clean and protective packaging
Each PP slotted knurled screw is produced under controlled conditions to ensure stable performance in industrial applications.
Applications of the Product
PP slotted knurled screws are widely used in:
- Electronics: Non-conductive housing assemblies
- Laboratory equipment: Chemical-resistant fixtures
- Medical devices: Lightweight plastic components
- Chemical industry: Corrosion-resistant equipment
- Water treatment systems: Plastic pipeline assemblies
- Consumer products: Adjustable plastic structures
- Industrial equipment: Light-duty mechanical systems
Their manual tightening design makes them ideal for frequent adjustment applications.
Why Choose This Product
- Lightweight polypropylene construction
- Excellent chemical and corrosion resistance
- Non-conductive and safe for electrical systems
- Knurled head for easy manual operation
- Slotted drive for optional tool tightening
- Suitable for frequent assembly/disassembly
- Cost-effective plastic fastening solution
- Custom colors and sizes available
- Ideal for OEM plastic product manufacturing
The PP slotted knurled screw provides a practical and reliable solution for lightweight industrial fastening.
Why Choose Flybear
Flybear specializes in industrial fasteners and engineering plastic fastening solutions for global OEM applications.
- Advanced plastic injection molding capability
- Stable production for high-volume OEM orders
- Custom engineering support for plastic fasteners
- Strict quality inspection system
- Global export experience
- Technical consultation for application design
Flybear provides reliable fastening solutions for electronics, chemical, and lightweight industrial industries.
Quality Inspection and Control
Strict quality control ensures stable performance:
- Raw material resin testing
- Dimensional accuracy inspection
- Thread fit testing
- Knurled grip quality inspection
- Chemical resistance testing
- Heat resistance validation
- Visual surface inspection
- Packaging quality control
All production follows ISO quality management systems.
Selection Guide
When selecting PP slotted knurled screws, consider:
- Load and torque requirements
- Chemical exposure conditions
- Temperature range
- Electrical insulation needs
- Frequency of adjustment
- Size and thread compatibility
Proper selection ensures durability and functional reliability.
FAQ
1. What is a PP slotted knurled screw used for?
It is used for manual adjustment and lightweight plastic fastening applications.
2. Can it be tightened by hand?
Yes, the knurled head allows easy hand tightening.
3. Is PP resistant to chemicals?
Yes, polypropylene has excellent chemical resistance.
4. Can it be used in electronics?
Yes, it is non-conductive and safe for electronic applications.
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.
