S-99091A084 2-56 x 3/4" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance ensures long-term reliability in harsh environments without rust or degradation
• Excellent electrical insulation properties prevent short circuits in electronic assemblies and sensitive equipment
• Wide temperature tolerance from -40° to 185°F maintains structural integrity across diverse operating conditions
• Precise Class 2A thread fit provides consistent engagement and reliable fastening performance
• External hex drive design enables quick installation and removal with standard tools
• RoHS 3 compliance meets environmental regulations for safe use in restricted applications
• Lightweight nylon construction reduces overall assembly weight while maintaining strength

Professional Applications & Engineering Value

These nylon plastic hex head screws with 2-56 UNC coarse threading solve critical engineering challenges where metal fasteners fail. The non-conductive properties make them ideal for electronic component assembly, preventing electrical interference in PCB mounting and enclosure fastening. Their corrosion-resistant nature eliminates galvanic corrosion concerns in marine, chemical processing, and outdoor applications. The fully threaded design with Class 2A fit ensures maximum engagement strength throughout the 3/4" length, while the black color provides UV resistance and aesthetic consistency. These screws withstand thermal cycling from -40° to 185°F, making them suitable for automotive, aerospace, and industrial equipment exposed to temperature variations.

Specification Summary & Compliance

Manufactured to UNC thread standards with Class 2A thread fit for consistent dimensional accuracy. Features coarse threading with 2-56 thread size and 0.086" thread diameter. The external hex drive with 1/8" head width and 3/64" head height ensures tool compatibility. Fully compliant with RoHS 3 (2015/863/EU) regulations for hazardous substance restrictions. Right-hand thread direction with fully threaded construction provides maximum fastening capability across the entire 3/4" length.