Materials
Plastics
Plastics (Engineering Plastics for Fasteners and Components)
Material:
Plastics are synthetic polymers used for engineered fasteners where weight savings, corrosion resistance, or electrical insulation are priorities.
Common engineering plastics used in fasteners include Nylon (PA), PTFE, PEEK, Acetal (POM), and Polycarbonate (PC).
Mechanical Properties:
Strength: Moderate compared to metals; some high-performance plastics (like PEEK) can approach low-grade metals in tensile strength.
Toughness & Ductility: Many plastics exhibit good impact resistance and flexibility, reducing brittleness under shock loads.
Weight: Extremely lightweight (~1/7th the density of steel).
Temperature Resistance:
Standard plastics (Nylon, Acetal) up to ~200°F (93°C).
High-performance plastics (PEEK, PTFE) up to 500°F (260°C).
Chemical Resistance: Excellent to acids, bases, and many solvents. PTFE and PEEK are extremely chemically inert.
Electrical Properties: Non-conductive, making them ideal for insulating fasteners and components.
Manufacturing Considerations:
Machining: Plastics can be machined, drilled, or turned, but thermal expansion and melting must be managed.
Injection Molding & Extrusion: Common for high-volume plastic fasteners like screws, clips, and standoffs.
Joining: Can be glued, heat-staked, or press-fit; threading requires attention to avoid cracking.
Customization: Colors, additives (UV stabilizers, flame retardants, fillers) can be tailored to specific applications.
Applications in Fasteners & Components:
Lightweight fasteners: Screws, nuts, washers, and clips in electronics, automotive, and consumer goods.
Chemical processing equipment: Non-metallic fasteners for corrosive environments.
Electrical assemblies: Insulating fasteners, standoffs, and spacers.
Food and medical industries: Plastics like PEEK and PTFE are FDA-compliant and non-toxic for sanitary applications.
High-temperature or chemical-resistant applications: PEEK and PTFE fasteners for aerospace, oil & gas, and chemical plants.
Key Takeaway for Fasteners
Plastics are chosen for weight reduction, corrosion resistance, electrical insulation, and chemical compatibility. While they cannot match the strength of metals, high-performance engineering plastics(like PEEK and PTFE) enable critical fastener applications in electronics, aerospace, chemical, and medical industries where metals may be unsuitable.
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Putting Manufacturing Exellence Into Practice
The manufacturing processes, testing capabilities, and quality systems featured throughout WN Global support the production of critical components and engineered fastening solutions across demanding industries. Connect with our team to learn how our manufacturing capabilities can support your project requirements.
