S-91297A634 3/8"-16 x 2 1/2" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional temperature resistance from -100°F to 500°F for reliable performance in extreme thermal environments
• Superior chemical resistance thanks to PTFE plastic construction, ideal for corrosive or chemical-exposed applications
• Maximum torque application capability with external hex drive design for secure fastening and easy installation
• Reliable coarse threading with UNC 3/8"-16 specification and Class 2A fit for quick assembly and vibration resistance
• Full thread coverage along the 2 1/2" length provides consistent holding power across the entire fastener
• Environmental compliance assurance with RoHS 3 and REACH compliance for global industrial applications
• Durable white PTFE construction offers excellent dielectric properties and long-term performance stability

Professional Applications & Engineering Value

These PTFE plastic hex head screws deliver critical engineering solutions where metal fasteners fail. The PTFE material provides inherent chemical inertness, making these UNC coarse thread screws ideal for chemical processing equipment, semiconductor manufacturing, and food processing applications where corrosion resistance is paramount. The external hex drive design ensures maximum torque transfer during installation, while the Class 2A thread fit maintains precise tolerances for reliable performance. With operating temperatures spanning from cryogenic conditions to high-heat industrial environments, these fully threaded plastic fasteners eliminate thermal expansion concerns common with metal alternatives. The white PTFE construction also provides excellent electrical insulation properties, making them suitable for electrical enclosures and electronic assemblies requiring non-conductive components.

Specification Summary & Compliance

This 3/8"-16 UNC hex head screw features precise Class 2A thread fit tolerances ensuring consistent performance across industrial applications. Manufactured to UNC coarse thread standards with a 2 1/2" fully threaded length, 9/16" head width, and 17/64" head height. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial components. The PTFE plastic construction maintains dimensional stability across the specified temperature range while providing the chemical resistance properties inherent to fluoropolymer materials.