S-91970A751 5/8"-11 x 1/2" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Excellent corrosion resistance due to nylon construction, eliminating rust and chemical degradation in harsh environments
• Reliable performance across wide temperature ranges from -40°F to 185°F, maintaining integrity in varying operational conditions
• Secure fastening with Class 2A thread fit ensuring proper engagement and reduced risk of loosening in vibration-prone applications
• Quick installation with external hex drive and 15/16" head width for standard tool compatibility and efficient assembly
• Full threading along 1/2" length provides maximum grip and holding power across the entire fastener engagement area
• Lightweight yet durable plastic construction reduces overall component weight while maintaining structural reliability
• Compliance with RoHS 3 environmental standards meets modern regulatory requirements for industrial components

Professional Applications & Engineering Value

This 5/8"-11 UNC coarse thread nylon hex head screw delivers critical advantages in applications where metal fasteners fail. The black nylon material provides inherent corrosion resistance, making it ideal for chemical processing, marine environments, and food equipment where moisture and corrosive agents are present. The coarse UNC thread design ensures rapid installation and superior holding power in plastic assemblies and soft materials, while the external hex drive with substantial 15/16" head width allows for high torque application without stripping. Engineers specify this fully threaded fastener for electrical enclosures, automotive components, and outdoor equipment where temperature resistance from -40° to 185°F and electrical insulation properties are essential for long-term reliability.

Specification Summary & Compliance

This inch-system fastener features 5/8"-11 UNC coarse threads with Class 2A thread fit tolerance for consistent engagement. The fully threaded design extends the complete 1/2" length with 0.625" thread diameter. Manufacturing complies with RoHS 3 (2015/863/EU) regulations, ensuring restriction of hazardous substances for environmental safety and regulatory compliance in industrial applications.