Fasteners Made From High-Performance Plastics PEEK and PTFE
July 24, 2025Fasteners face extreme performance requirements – particularly in demanding sectors like mechanical engineering, medical devices, electronics, and the chemical industry, where high-performance materials such as PEEK and PTFE are essential.
Bülte offers a comprehensive range of fasteners made from high-performance plastics PEEK and PTFE, including screws, nuts, and washers. These advanced materials stand out for their exceptional chemical resistance, thermal stability, and mechanical strength. Compared to metal fasteners, they also provide the benefit of reduced weight, making them ideal for weight-sensitive applications.
PEEK (polyether ether ketone) is highly regarded for its high tensile strength, continuous use temperature resistance up to 260°C, and excellent dimensional stability. In contrast, PTFE (polytetrafluoroethylene) offers an extremely low coefficient of friction, outstanding resistance to aggressive chemicals, and superior electrical insulation – making it the perfect choice for sealing elements, electrical insulators, and low-friction applications.
Fasteners made from high-performance plastics PEEK and PTFE – lightweight, durable, and chemically resistant solutions for industrial applications.
Plastic Standard Parts – Custom-Engineered and High-Performance
Bülte’s standard product range includes over 6,500 plastic fasteners in various standard dimensions (cheese head screws ISO 1207 (DIN 84), washers ISO 7089 (DIN 125, DIN 34815), washers ISO 7092 (DIN 433), washers ISO 7093 (DIN 9021), and many more), different manufacturing types (e.g. injection-molded parts, turned and stamped components), and a wide variety of materials. In addition to PEEK and PTFE, customer-specific versions reinforced with glass fiber, graphite, or carbon fiber are also available to meet special requirements such as enhanced sliding properties or increased tensile strength.
PEEK and PTFE Components in the Bülte Range
| Product | PEEK | PTFE |
|---|---|---|
|
Cheese head screws ~ DIN 84 / ISO 1207 |
on request | M2 - M4 |
| Pan head screws ~ DIN 85 / ISO 1580 | on request | M2 - M4 |
| Hex socket head screws ~ DIN 912 / ISO 4762 | M4 - M12 | on request |
| Hex head screws ~ DIN 933 / ISO 4017 | M4 - M12 | M2 - M16 |
| Hex nuts ~ DIN 934 / ISO 4032 | M4 - M12 | M2 - M16 |
| Washers ~ DIN 125 / DIN 38415 / ISO 7089 | M2.5 - M20 | M2 - M20 |
| Washers ~ DIN 433 / ISO 7092 | on request | M2 - M20 |
| Washers ~ DIN 9021 / ISO 7093 | M2 - M20 | M2 - M20 |
| Flat plastic washers | on request | ID Ø 1.2 - 8.8 mm OD Ø 3.5 - 18.5 mm |
| Locking / sealing washers | on request | M3 - M36 |
| Flanged plain bearings made of POM +20% PTFE, self-lubricating | on request | ID Ø 5.1 - 10.3 mm |
| Spacers – height 2.0 - 30.0 mm | on request | ID Ø 3.2 - 5.3 mm OD Ø 6.0 - 10.0 mm |
| Cable clamps, white | on request | Length 54 - 125 mm |
The product range also includes self-adhesive washers, captive sealing washers, and combination fasteners that simultaneously provide locking, insulation, and sealing – ideal for safety-critical applications in extreme operating conditions.
Custom-Made PEEK and PTFE Parts
In addition to its extensive standard range, Bülte offers the production of custom parts based on customer drawings. Development is carried out in close collaboration with the customer, backed by decades of experience in plastics processing and the use of advanced manufacturing technologies.
Forward-Thinking Fastening Solutions
Combining technical expertise, material know-how, and tailored development, Bülte has been offering far more than just standard plastic parts since 1956. As a family-run company, Bülte is your trusted partner for forward-looking fastening solutions made from plastic. The company's focus on quality, innovation, and custom-engineered products makes Bülte the first choice for advanced plastic fasteners made from PEEK and PTFE.