S-94613A108 4-40 x 3/8" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Excellent chemical resistance for reliable performance in harsh industrial environments
• Wide operating temperature range (-40° to 185°F) ensures stability across diverse applications
• External hex drive design provides secure installation with standard tools and prevents stripping
• Class 2A thread fit guarantees precision alignment and consistent fastening performance
• RoHS 3 compliance meets environmental regulations for safe usage in sensitive applications
• Lightweight nylon construction reduces overall assembly weight while maintaining durability
• Coarse UNC threading enables quick installation and superior holding power in plastic materials

Professional Applications & Engineering Value

These 4-40 UNC nylon plastic hex head screws deliver exceptional value in applications where metal fasteners would be problematic. The nylon material provides inherent electrical insulation properties and corrosion resistance, making them ideal for electrical enclosures, control panels, and marine applications. The coarse thread design ensures superior pull-out resistance in plastic substrates and softer materials, while the external hex drive allows for high torque application without damaging the fastener head. These temperature resistant screws maintain their mechanical properties across extreme temperature variations, from freezing conditions to elevated thermal environments, ensuring long-term reliability in automotive, electronics, and outdoor equipment applications where chemical resistant fasteners are essential for durability.

Specification Summary & Compliance

This 4-40 UNC thread screw features precision Class 2A thread fit according to Unified Thread Standard specifications, ensuring consistent engagement and reliable fastening. The 3/8" length and fully threaded design provide maximum holding strength across the entire fastener length. Manufactured to comply with RoHS 3 (2015/863/EU) regulations, these screws meet international environmental standards while maintaining the dimensional accuracy required for industrial applications. The right-hand thread direction and coarse thread spacing follow standard UNC specifications for compatibility with existing hardware and tooling systems.