S-99091A533 1/4"-20 x 1/4" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from nylon construction, eliminating rust and chemical degradation in harsh environments
• Excellent electrical insulation properties for safe use in electrical assemblies and sensitive electronic applications
• Reliable Class 2A thread fit ensuring consistent engagement and vibration resistance in industrial assemblies
• Wide temperature tolerance from -40° to 185°F for stable performance across diverse operating conditions
• External hex drive design with 3/8" head for secure tool engagement and efficient installation
• RoHS 3 compliance meeting strict environmental regulations for hazardous substance restrictions
• Lightweight nylon construction reducing overall assembly weight while maintaining structural integrity

Professional Applications & Engineering Value

These 1/4"-20 UNC nylon hex head screws provide critical solutions for applications where metal fasteners fail. The black nylon plastic construction offers inherent corrosion resistance, making them ideal for chemical processing, marine environments, and outdoor installations. Their electrical insulation properties prevent short circuits in electrical enclosures, control panels, and electronic devices. The coarse UNC thread with Class 2A fit ensures quick assembly and reliable performance in vibration-prone applications. The fully threaded design provides maximum holding power across the entire fastener length, while the external hex drive allows for high-torque installation without stripping.

Specification Summary & Compliance

This 1/4"-20 UNC hex head screw features precision Class 2A thread fit per Unified Thread Standard specifications, ensuring proper clearance and engagement. The coarse thread spacing provides excellent resistance to vibration loosening. Manufacturing complies with RoHS 3 (2015/863/EU) regulations, guaranteeing environmental safety and restricted substance compliance. Dimensions include 1/4" length, 3/8" head width, and 3/16" head height for standardized installation across industrial applications.