S-91970A722 1/2"-13 x 2 1/2" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance for long-lasting performance in harsh environments without rust or degradation
• Excellent electrical insulation properties for safe use in electrical assemblies and sensitive equipment
• Wide operating temperature range (-40° to 185°F) maintaining structural integrity in extreme conditions
• Reliable Class 2A thread fit ensuring consistent engagement and secure fastening in UNC coarse thread applications
• 3/4" external hex head design providing excellent torque transmission and easy installation with standard tools
• RoHS 3 compliance meeting environmental regulations for hazardous substance restrictions
• Partial threading configuration offering optimal grip strength while reducing material usage and weight

Professional Applications & Engineering Value

These 1/2"-13 UNC coarse thread nylon hex head screws deliver critical engineering advantages where metal fasteners fail. The black nylon plastic construction eliminates galvanic corrosion concerns in mixed-material assemblies while providing essential electrical insulation for electronic enclosures, control panels, and marine applications. The external hex drive with 3/4" head width ensures maximum torque capability without stripping, while the Class 2A thread fit maintains precise engagement in UNC coarse thread applications. Operating across a broad temperature range from -40° to 185°F, these screws maintain dimensional stability in outdoor, automotive, and industrial environments where thermal cycling occurs. The partially threaded design concentrates fastening force where needed most, making them ideal for securing panels, brackets, and components in corrosion-resistant assembly scenarios.

Specification Summary & Compliance

Manufactured to inch system specifications with 1/2"-13 UNC coarse threads maintaining Class 2A thread fit tolerances for reliable engagement. Features a 3/4" hex head with 23/64" height and 2 1/2" overall length with minimum thread length of 1 1/4". Compliant with RoHS 3 (2015/863/EU) regulations, ensuring environmental safety and restricted substance compliance for global manufacturing applications.