Download the PEI (Polyethylenimine) - Ultem
PEI Ultem Metric Hexagon Nuts manufactured to ISO 4032 standards are high-performance fastening components designed for applications requiring exceptional mechanical strength, thermal stability, and electrical insulation. Manufactured from Polyetherimide (PEI Ultem), these nuts combine high strength and stiffness with excellent dimensional stability across a broad temperature range. PEI exhibits outstanding heat resistance, low creep under sustained loads, and excellent retention of mechanical properties at elevated temperatures. The material also offers good resistance to hydrolysis, many industrial chemicals, and repeated sterilization processes, making it suitable for demanding environments where long-term reliability is essential. In addition, PEI provides inherent flame resistance, low smoke generation, and excellent electrical insulating properties, making these nuts well suited for aerospace, electronics, medical, and industrial applications requiring dependable performance in challenging conditions.
The hexagonal design is compatible with metric bolts, screws, threaded rods, and studs, and can be installed easily using standard spanners and sockets. PEI Ultem exhibits excellent creep resistance, hydrolysis resistance, and long-term thermal stability, making these hex nuts ideal for precision assemblies exposed to mechanical and thermal stress.
PEI Ultem hex nuts are widely used in aerospace systems, semiconductor equipment, medical devices, electronics, and industrial machinery where lightweight construction, electrical insulation, and high-temperature performance are essential.
Key Features
Available in a range of metric sizes.
Material: PEI (Polyethylenimine) - Ultem
Max Temperature: 170°C/340°F
Flame Resistance: UL94 V-0
Return components within 90 days for a full refund. Please see our returns terms and conditions for further information.
Properties and applications
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