The PA66+50% glass-filled nylon cross recessed pan head machine screw is a high-performance engineering plastic fastener that plays a crucial role in modern industry. This screw combines the excellent properties of PA66 nylon with the reinforcing characteristics of glass fibers, creating a fastening solution that is both lightweight and robust.
The PA66+50% glass-filled nylon cross recessed pan head machine screw offers significant material advantages. The PA66 nylon base provides good mechanical properties and chemical resistance, while the 50% glass fiber reinforcement greatly enhances the material's strength, stiffness, and dimensional stability. This combination results in a tensile strength of 180MPa, a flexural strength of 270MPa, and a heat deflection temperature of up to 250℃.
In terms of mechanical properties, this screw exhibits excellent creep resistance and fatigue resistance, maintaining stable performance under long-term load. Its friction coefficient is as low as 0.15-0.25, providing good self-lubrication, making it particularly suitable for applications requiring frequent disassembly.
Regarding chemical properties, the PA66+50% glass-filled nylon screw has good resistance to most organic solvents, oils, and weak acids and bases, but its performance may decline in strong acid and alkali environments. Its water absorption rate is 1.5%, so environmental humidity must be considered during use.
Usage Methods
Installing PA66+50% glass-filled nylon cross recessed pan head machine screws requires special attention to torque control. It is recommended to use a torque wrench, with the installation torque controlled within the range of 0.5-0.8N·m. Excessive torque may cause thread stripping, while insufficient torque can affect connection reliability.
During installation, it is advisable to pre-tighten with manual tools first, then use power tools to complete the final tightening. For applications requiring repeated use, it is recommended to apply an appropriate amount of silicone-based lubricant to the threaded area to extend service life.
For maintenance, regularly check the tightness of the screws, with a comprehensive inspection recommended every 3-6 months. In high-temperature or corrosive environments, the inspection cycle should be shortened accordingly.
Application Scenarios
In the automotive manufacturing sector, these screws are widely used in engine compartment wire harness fixing and interior component installation. Their lightweight properties help reduce vehicle weight and improve fuel efficiency. In the battery pack fixing systems of new energy vehicles, their insulation properties are indispensable.
The electronics and electrical industry is another important application area. In PCB board fixing and housing assembly, these screws provide reliable mechanical connections while avoiding electromagnetic interference issues that metal screws might cause. Their flame retardancy rating reaches UL94 V-0, fully meeting the safety requirements of electronic products.
In the machinery and equipment field, these screws are commonly used in applications requiring insulation, vibration damping, or corrosion resistance. For example, in food processing equipment, their hygienic properties and corrosion resistance are significantly superior to metal fasteners. In textile machinery, their self-lubricating characteristics can reduce maintenance frequency and improve equipment operating efficiency.
The PA66+50% glass-filled nylon cross recessed pan head machine screw, with its unique material properties, demonstrates significant advantages in multiple industrial fields. As material technology continues to advance, this high-performance plastic fastener is bound to find applications in more areas, providing reliable connection solutions for modern industrial development.