GB55 - PEEK (Polyether Ether Ketone) - Grade A - Grade 4.8 - Natural Color
Product Details
Product Name: Hexagonal Lock Nut
Technical Standard: GB55
Product Grade: Grade A
Performance Grade: Grade 4.8
Material: PEEK (Polyether Ether Ketone)
Surface Treatment: Natural Color
Product Type: Hexagonal Lock Nut (Customizable)
Product Description
Product Overview
This product is a hexagonal lock nut complying with GB55 standard, precision-manufactured from high-performance engineering plastic PEEK (Polyether Ether Ketone). Combining a standard hexagonal structure with an integrated top locking design, the product utilizes the excellent elastic memory and wear resistance of PEEK material to generate continuous rebound locking force after being screwed into the bolt, achieving a reliable anti-loosening effect. This product has comprehensive characteristics such as high strength, high temperature resistance, chemical corrosion resistance, electrical insulation and self-lubrication, suitable for non-metallic anti-loosening connection needs under harsh working conditions.
Core Advantages
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Excellent Anti-Loosening Performance: Utilizes the elastic deformation of PEEK material to generate continuous locking force, with reliable anti-loosening effect and reusability.
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Extreme Environment Resistance: Long-term high temperature resistance (up to above 250℃), chemical corrosion resistance, radiation resistance, and stable performance.
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Lightweight and Insulating: Extremely light in weight and an excellent insulator, suitable for electrical isolation and weight reduction occasions.
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Low Wear and Self-Lubrication: Low friction coefficient, little wear on bolt threads, and certain self-lubricating properties.
Applicable Industries
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Aerospace and Military Industry: Connection and anti-loosening of avionics equipment brackets, non-metallic composite structures, and high-temperature and lightweight components.
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Semiconductor and Electronic Industry: Fastening requiring high cleanliness and corrosion resistance for wafer processing equipment, high-purity pipeline systems, and internal components of vacuum chambers.
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High-End Medical Devices: Insulating and anti-loosening connections for medical imaging equipment (such as MRI), surgical robots, and high-temperature and high-pressure sterilization instruments.
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New Energy and Electric Vehicles: Fuel cell stacks, battery management system (BMS) insulating brackets, and non-conductive parts inside motors.
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Chemical and Process Industry: Corrosion-resistant connections for chemical pumps and valves, reaction vessel linings, and high-purity/corrosive fluid transmission pipelines.
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Food and Pharmaceutical Equipment: Fastening points that need to withstand high-temperature steam and chemical cleaning in food-contact areas and CIP/SIP cleaning equipment.
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Precision Instruments and Optics: Insulating and vibration-damping anti-loosening connections for precision measuring instruments, optical platform brackets, and vibration-sensitive equipment.
Warm Tips
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Before installation, please ensure that the materials of the bolt and nut are compatible to avoid the impact of excessive difference in thermal expansion coefficient or electrochemical corrosion.
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It is recommended to manually screw in until it fits during the first installation, then use a torque wrench to tighten it according to the recommended value to avoid over-tightening due to the relatively hard material.
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Although PEEK has excellent chemical resistance, it is still necessary to confirm its long-term tolerance to specific chemical media before installation and use.
