S-91970A540 1/4"-20 x 3/4" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance ensures long-lasting performance in harsh environments without rust or degradation
• Excellent electrical insulation properties prevent current conduction for enhanced safety in electronic applications
• External hex drive design provides secure tool engagement and straightforward installation with standard wrenches
• Wide temperature tolerance from -40° to 185°F maintains structural integrity across diverse operating conditions
• Class 2A thread fit with UNC coarse threading delivers reliable fastening and easy assembly in various materials
• RoHS 3 compliance guarantees environmental safety and regulatory adherence for global industrial use
• Lightweight nylon construction reduces overall component weight while providing durable mechanical performance

Professional Applications & Engineering Value

These nylon hex head screws solve critical engineering challenges where metal fasteners fail. The black plastic construction eliminates galvanic corrosion in mixed-material assemblies while providing essential electrical insulation for sensitive electronic components. The UNC coarse thread pattern ensures rapid installation and secure holding power in plastics, wood, and soft metals. With full threading along the entire 3/4" length, these screws distribute clamping force evenly, preventing material stress concentration. Ideal for industrial applications requiring non-conductive, corrosion-resistant fasteners that maintain performance across extreme temperature variations from -40° to 185°F, these screws offer reliable alternatives to metallic options in electrical enclosures, marine environments, and food processing equipment.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance. Features UNC coarse thread (1/4"-20) specification with external hex drive (7/16" width) for standardized tool compatibility. Fully compliant with RoHS 3 (2015/863/EU) environmental regulations, containing no restricted hazardous substances. The nylon material provides consistent mechanical properties across the specified temperature range while maintaining dimensional stability.