PPS Hex Nut
PPS hex nut is a high-performance engineering plastic fastening component designed for industrial applications requiring excellent heat resistance, chemical stability, and electrical insulation. The PPS hex nut is manufactured from polyphenylene sulfide (PPS), a premium thermoplastic widely used in automotive systems, electrical equipment, and industrial machinery.
The PPS hex nut provides reliable thread engagement and stable torque performance while offering significant advantages over metal nuts in corrosive, high-temperature, and electrically sensitive environments. It is lightweight, non-corrosive, and non-conductive, making it ideal for advanced OEM and precision engineering applications.

Product Overview
The PPS hex nut is engineered for secure fastening in demanding industrial environments where conventional metal nuts may fail due to corrosion, electrical conductivity, or weight limitations. Its hexagonal geometry allows easy installation with standard tools while maintaining stable mechanical locking performance.
This PPS hex nut performs reliably under continuous thermal exposure and chemical attack. Unlike metal fasteners, it does not rust, generate galvanic corrosion, or conduct electricity, ensuring long-term stability in sensitive systems.
As a specialized industrial fastener, it is widely used in OEM manufacturing where lightweight design, insulation, and cost efficiency are critical.
Product Specifications
| Item | Description |
|---|---|
| Product Name | PPS Hex Nut |
| Material | PPS (Polyphenylene Sulfide) |
| Nut Type | Hex Nut |
| Thread Type | Metric / UNC / Custom |
| Size Range | M2–M12 |
| Color | Black / Natural |
| Density | ~1.35 g/cm³ |
| Operating Temperature | -40°C to 200°C |
| Electrical Properties | Good insulation |
| Chemical Resistance | Excellent resistance to fuels, oils, acids |
| Torque Capacity | Medium load applications |
| Packaging | Anti-static bag / carton / OEM packaging |
| Customization | Size, thread, color available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | ~80–110 MPa (reinforced grades higher) |
| Compressive Strength | Good for engineering assemblies |
| Hardness | Shore D 85–90 |
| Continuous Service Temperature | Up to 200°C |
| Melting Point | ~280–285°C |
| Dielectric Strength | Good insulation performance |
| Water Absorption | Very low |
| Chemical Resistance | Excellent resistance to fuels, solvents, acids |
Materials and Manufacturing Process
The PPS hex nut is manufactured using precision polymer processing techniques to ensure stable performance and accurate threading.
- Raw material selection: High-quality PPS resin (reinforced or unreinforced)
- Injection molding / CNC machining: Formation of hex nut geometry
- Thread forming: Precision internal thread machining or molding
- Annealing treatment: Improves dimensional stability and reduces internal stress
- Surface finishing: Optional polishing for precision applications
- Inspection: Dimensional and mechanical testing
- Cleaning: Contamination-free processing for industrial environments
- Packaging: Anti-static and moisture-protected packaging
Each PPS hex nut is produced under strict quality control standards to ensure consistent industrial reliability.
Applications of the Product
The PPS hex nut is widely used across multiple industrial sectors:
- Automotive industry: Engine compartments and electronic modules
- Electrical systems: High-temperature insulating assemblies
- Electronics industry: PCB and enclosure fastening systems
- Industrial equipment: Chemical-resistant machinery assemblies
- Aerospace applications: Lightweight non-metallic structures
- Pump and valve systems: Corrosion-resistant connections
- Household appliances: Heat-resistant internal assemblies
- Precision instruments: Assembly and locking systems
Its combination of thermal stability and chemical resistance makes it ideal for harsh operating environments.
Why Choose This Product
- Excellent heat resistance up to 200°C
- Superior chemical resistance to fuels and solvents
- High rigidity and dimensional stability
- Excellent electrical insulation performance
- Lightweight structure reduces system weight
- Non-corrosive and non-metallic material
- Stable torque performance in assemblies
- Suitable for OEM mass production
- Cost-effective engineering plastic solution
The PPS hex nut provides a reliable balance of performance, durability, and manufacturing efficiency.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and engineering plastic components.
- Advanced precision molding and machining capability
- OEM/ODM customization support
- Stable mass production for global supply
- Strict quality inspection system
- Global export experience
- Engineering application support
Flybear supports OEM manufacturers, distributors, and industrial engineering companies with reliable fastening solutions.
Quality Inspection and Control
Quality assurance is strictly implemented throughout production:
- Raw material performance testing
- Dimensional accuracy inspection
- Tensile and compressive strength testing
- Thermal resistance verification
- Chemical resistance evaluation
- Thread gauge inspection
- Surface quality control
- Packaging integrity inspection
All processes follow ISO-based quality management standards to ensure consistent performance.
Selection Guide
When selecting a PPS hex nut, consider:
- Operating temperature requirements
- Chemical exposure conditions
- Mechanical load requirements
- Electrical insulation needs
- Thread size compatibility
- Assembly environment
Proper selection ensures long-term stability and optimal performance.
FAQ
1. What is PPS hex nut used for?
It is used for fastening in high-temperature, chemical-resistant, and insulated environments.
2. Can PPS replace metal nuts?
Yes, in applications requiring lightweight, non-conductive, and corrosion-resistant fasteners.
3. What is the temperature resistance of PPS?
Typically up to 200°C for continuous use.
4. Is PPS resistant to chemicals?
Yes, it has excellent resistance to fuels, oils, and acids.
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.


