S-99091A190 8-32 x 1/4" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Corrosion-resistant nylon construction ensures long-lasting performance in harsh environments without rust or degradation.
• Wide temperature tolerance from -40° to 185°F allows reliable operation in both extreme cold and moderate heat conditions.
• Class 2A thread fit with UNC coarse threading provides easy, secure installation and consistent engagement in various materials.
• External hex drive design enables quick, tool-friendly assembly and disassembly with standard wrenches.
• Fully threaded shank maximizes grip strength and distribution along the entire fastener length.
• RoHS 3 compliance guarantees environmental safety and adherence to international regulatory standards.
• Lightweight plastic material reduces overall assembly weight while providing excellent electrical insulation properties.

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 8-32 UNC nylon plastic hex head screws deliver exceptional value in applications where metal fasteners would fail. The black nylon material inherently resists corrosion, chemicals, and electrical conductivity, making them ideal for electrical enclosures, marine equipment, and food processing machinery. The coarse UNC thread pattern with Class 2A fit ensures rapid installation and vibration resistance in plastic, wood, and soft metal substrates. With full threading along the entire 1/4" length, these screws provide superior holding power while the external hex drive accommodates high-torque applications without stripping. Their temperature resistance from -40° to 185°F makes them suitable for outdoor, automotive, and HVAC applications where thermal stability is critical.

Specification Summary & Compliance

This 8-32 UNC screw features precise Class 2A thread fit tolerances per Unified Thread Standard specifications, ensuring consistent performance across production runs. The fully threaded design maintains uniform engagement while the external hex drive (1/4" head width) provides reliable torque transmission. Manufacturing complies with RoHS 3 (2015/863/EU) regulations, confirming the absence of restricted hazardous substances. The coarse thread spacing and right-hand thread direction follow industry-standard UNC threading conventions for broad compatibility with existing components and tooling.