PFA Hexagon socket head screw
PFA Hexagon socket head screw is known as the “King of Plastics”. It is corrosion-resistant and electrically insulating. It is not affected by temperature and can be used for a long time at -80~260℃.
M Size: M4-M10
peek plastic material:Polyvinylidenefluoride(PFA)
product type: Hexagon socket head bolt
Finish: Natural/Black/Other Colors(Customizable)
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PFA Hexagon socket head screw Overview
PFA (Perfluoroalkoxy Alkane) Hexagon Socket Head Screw is an ultra-high-performance plastic screw designed for critical fastening applications where maximum chemical resistance, extreme thermal stability, and the highest achievable clamping force in a polymer are required.Hexagon Socket drive allows for controlled, high-torque installation, ensuring a secure assembly that leverages PFA’s near-universal chemical inertness.
I. Overview and Design
| Feature | Detail | Purpose |
| Material | PFA (Perfluoroalkoxy Alkane) | Provides near-universal chemical inertness and the highest thermal stability among melt-processable fluoropolymers. |
| Head Style | Socket Head (Cylindrical) | Features a tall, cylindrical head, designed for high material volume, offering the maximum bearing surface and strength for PFA. |
| Drive Style | Hexagon Socket (Allen Drive) | Allows for superior tool contact and maximum torque transmission, which is essential for creating secure seals in fluid systems. |
| Application | Critical non-corrosive fastening in high-purity, high-temperature, and chemically aggressive environments. | Ideal for demanding fluid handling systems and specialized industrial equipment. |
Key Features
PFA screws are essential in applications where conventional materials fail due to chemical attack or heat.
Extreme Chemical Resistance: Unaffected by virtually all industrial chemicals, solvents, and concentrated acids up to its maximum service temperature.
Thermal Stability: Maintains integrity and chemical resistance from cryogenic lows up to approximately 260°C (500°C).
Ultra-High Purity: Non-leaching and non-contaminating, making it indispensable for ultra-pure water (UPW), pharmaceutical, and semiconductor systems.
Best Torque (for PFA): The Hexagon Socket drive allows for the highest, most controlled installation torque achievable with PFA material.
Non-Conductive and Non-Magnetic: Provides electrical isolation and is safe for sensitive electronic and medical equipment.
Key Perfluoro alkoxyalkane (PFA) Properties
Advantages and Disadvantages
| Category | Advantage (Pro) | Disadvantage (Con) |
| Performance | Highest Chemical & Thermal Resistance of common polymer screws. Excellent sealing capability due to Hex Socket drive. | Low Mechanical Strength: Cannot sustain high tensile loads like PEEK or metal. |
| Design | Hex Socket allows for tool-based installation in tight spaces. Corrosion and galling immune. | Very High Cost due to specialized material and complex machining. |
| Material | Creep/Cold Flow: PFA is prone to deforming under constant pressure (creep), potentially causing the bolt to loosen over time. |
Applications
- Semiconductor equipment
- Chemical pumps and valves
- Medical equipment
- Food industry
- Aerospace
Packaging & Delivery
Standard packaging includes PE bag, foam cover, and one double-deck corrugated outer carton for safety during transit. Delivery time is 5-15 working days depending on the quantity.