Product Info

PEEK, PPS, and PI are high-performance engineering polymers used to manufacture screws that can withstand heat, chemicals, and high-stress environments. Discover their strengths and when to use each type for optimal performance.


1. Why Use Engineering Polymers for Screws?

In today’s advanced manufacturing landscape, plastic screws and fasteners are increasingly replacing metal components, especially where thermal, electrical, and chemical resistance is critical.

Engineering polymers offer unique advantages over metals:

- Lightweight – Reduces system weight and enhances energy efficiency
- Electrical insulation – Prevents short circuits in electronic assemblies
- Chemical resistance – Withstands harsh environments
- High thermal stability – Performs under elevated temperatures
- Corrosion-proof – No rust, ideal for humid or chemical-prone settings

Industries benefiting from these properties include electronics, aerospace, medical devices, chemical processing, and energy systems.


2. PEEK – A Premium Polymer for Maximum Performance

Full Name: Polyether Ether Ketone

Key Features:
- Withstands continuous temperatures up to 250°C
- Resists acids, alkalis, solvents, and sterilisation (autoclave)
- Mechanical strength comparable to some metals
- UV and gamma radiation resistant
- Biocompatible for medical use

Best Applications:
- Semiconductor machinery components
- Medical tools requiring sterilisation
- Aerospace and satellite-grade parts
- Chemical or energy industry equipment


3. PPS – High Performance with Cost Efficiency

Full Name: Polyphenylene Sulfide

Key Features:
- Sustains 200–220°C continuous use
- Chemically stable in acidic, alkaline, and oily environments
- Very low water absorption, retains size accuracy
- Flame retardant and electrically insulating

Best Applications:
- Fasteners in PCBs and electronics
- Lab instruments and analysers
- Appliance parts exposed to moderate heat
- General machinery in corrosive environments


4. PI – For the Most Demanding Environments

Full Name: Polyimide

Key Features:
- Endures extreme heat (up to 300°C)
- Excellent chemical and electrical stability
- High tensile/compressive strength
- Insoluble in most solvents

Best Applications:
- Aerospace systems and thermal shielding
- Scientific analysers and high-precision devices
- Furnaces or thermal processing equipment
- Systems exposed to rapid temperature shifts


5. Comparing When to Use PEEK, PPS, or PI

● Choose PEEK when:
- Operating in continuous high heat
- High mechanical and chemical resistance are both needed
- Applications involve sterilisation or medical standards
- You need long-term reliability in harsh conditions

● Choose PPS when:
- Cost-efficiency is essential for medium-high heat applications
- Dimensional stability and water resistance are priorities
- You’re producing in volume for electronics or appliances
- A flame-retardant material is needed

● Choose PI when:
- Your product must withstand extreme heat >260°C
- Dual resistance to chemicals and electricity is critical
- Use involves aerospace or high-end scientific devices
- Other materials fail under thermal cycling conditions


6. Why Choose NIPPON CHEMICAL SCREW CO., LTD.

As a trusted Japanese manufacturer, NIPPON CHEMICAL SCREW CO., LTD. delivers premium plastic fasteners made from high-grade engineering polymers:

- Materials include PEEK, PPS, and PI from top-tier suppliers
- Fully integrated in-house production ensures quality and traceability
- Custom solutions available for prototypes and technical designs
- Proven expertise in demanding fields—semiconductors, medical, aerospace
- Scalable production from small-batch to mass volume

Looking for fasteners that combine heat resistance, chemical durability, and electrical insulation? NIPPON CHEMICAL SCREW CO., LTD. is your best-fit partner.


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