S-91970A550 1/4"-20 x 2" Plastic Hex Head Screws
Plastic Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance eliminates rust concerns in humid or chemical environments
- Excellent electrical insulation properties prevent current leakage in electrical assemblies
- Wide temperature tolerance from -40°F to 185°F ensures reliable performance in varying conditions
- External hex drive design provides secure tool engagement for efficient installation and removal
- Class 2A thread fit guarantees consistent, reliable fastening with standard UNC coarse threading
- RoHS 3 compliance meets environmental regulations for safe industrial use
- Lightweight nylon construction reduces overall assembly weight while maintaining durability
Professional Applications & Engineering Value
These nylon hex head screws deliver critical engineering advantages where metal fasteners fall short. The black plastic construction provides inherent corrosion resistance, making them ideal for marine, chemical processing, and outdoor applications where moisture exposure is constant. Their electrical insulation properties are essential in electrical enclosures, control panels, and electronic assemblies where current isolation is mandatory. The UNC coarse threading ensures rapid installation and reliable holding power in plastic, wood, and soft metal substrates. With partial threading design, these screws offer precise clamping force control, preventing over-tightening in delicate assemblies while the external hex drive maintains compatibility with standard industrial tools.
Specification Summary & Compliance
This 1/4-20 x 2" nylon hex head screw features Class 2A thread fit per UNC standards with coarse thread spacing for optimal engagement. The screw maintains dimensional accuracy with 7/16" hex head width and 3/16" head height for consistent tool interface. Manufacturing complies with RoHS 3 (2015/863/EU) environmental regulations, ensuring hazardous substance-free composition. The partially threaded design provides 3/4" minimum thread length for secure fastening applications across industrial sectors.
