S-99091A081 2-56 x 1/2" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Corrosion-resistant nylon construction ensures reliable performance in humid or chemical environments without rust or galvanic corrosion
• Precision Class 2A thread fit provides consistent engagement and secure fastening with standard UNC threaded components
• Wide temperature tolerance (-40° to 185°F) maintains structural integrity across diverse operating conditions
• External hex drive design enables quick installation and removal with standard wrench tools
• RoHS 3 compliance meets international environmental standards for restricted substances
• Electrical insulation properties prevent current conduction in sensitive electronic applications
• Lightweight plastic construction reduces overall assembly weight while providing durable fastening

Professional Applications & Engineering Value

These 2-56 UNC nylon plastic hex head screws deliver exceptional value in applications where metal fasteners would compromise performance. The black nylon material provides excellent chemical resistance and electrical insulation, making them ideal for electronic enclosures, automotive components, and electrical panels. The coarse UNC thread ensures rapid installation and reliable holding power in plastic and soft materials, while the external hex drive accommodates high-torque applications without stripping. Engineered with full threading along the 1/2" length, these screws maintain consistent clamping force across the entire engagement area, solving common issues with vibration loosening in plastic assemblies.

Specification Summary & Compliance

Manufactured to inch system specifications with Class 2A thread fit tolerance for precise engagement. Features UNC coarse threads (2-56 size) with right-hand thread direction and dimensions including 1/8" head width and 3/64" head height. Compliant with RoHS 3 (2015/863/EU) regulations for hazardous substance restrictions, ensuring environmental responsibility in industrial applications.