S-91970A546 1/4"-20 x 1 1/2" 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
- Corrosion-free performance thanks to durable black nylon construction, eliminating rust concerns in humid or chemical environments
- Secure fastening with UNC coarse threading ensures quick installation and reliable holding power in various materials
- Easy installation and removal with external hex drive design providing superior torque transmission
- Temperature resilience maintaining structural integrity from -40° to 185°F for diverse operating conditions
- Electrical insulation properties of nylon plastic prevents electrical conductivity in sensitive applications
- Environmental compliance assurance with RoHS 3 compliance for regulated industries
- Optimized thread engagement with Class 2A thread fit ensuring consistent performance and interchangeability
Professional Applications & Engineering Value
These black nylon hex head screws solve critical engineering challenges where metal fasteners fail. The nylon plastic construction provides inherent corrosion resistance, making them ideal for chemical processing, marine, and food equipment applications where moisture exposure is constant. The UNC coarse thread design prevents cross-threading in soft materials while enabling rapid assembly in production environments. With partial threading, these screws offer precise clamping force control, preventing overtightening in delicate assemblies. The external hex drive accommodates standard tools for maintenance accessibility, while the temperature range ensures reliability in both freezing and elevated temperature industrial settings without degradation.
Specification Summary & Compliance
This 1/4"-20 x 1-1/2" hex head screw features Class 2A thread fit per UNC standards, ensuring dimensional accuracy and interchangeability. The partially threaded design provides 3/4" minimum thread length with coarse thread spacing for optimal performance. Manufactured in the inch system with precise head dimensions (7/16" width, 3/16" height), these fasteners comply with RoHS 3 (2015/863/EU) regulations, containing no restricted hazardous substances for environmental safety.
