S-91244A595 5/16"-18 x 3" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance eliminates rust concerns in harsh environments and outdoor applications
• Excellent electrical insulation properties prevent current leakage and short circuits in electrical assemblies
• Wide temperature tolerance from -40° to 185°F ensures reliable performance in varying thermal conditions
• UNC coarse threading with Class 2A fit provides quick installation and secure fastening in plastic and soft materials
• External hex drive design offers familiar, tool-friendly installation with standard wrench sets
• RoHS 3 compliance meets international environmental standards for hazardous substance restrictions
• Partial threading configuration allows for precise clamping force control in specific assembly requirements

Professional Applications & Engineering Value

These nylon plastic hex head screws deliver critical engineering advantages where metal fasteners fail. The off-white nylon construction provides inherent corrosion resistance, making them ideal for outdoor equipment, marine applications, and chemical processing environments where moisture and corrosive agents degrade metal components. Their electrical insulation properties make them essential in electrical enclosures, control panels, and electronic assemblies where current isolation is mandatory. The UNC coarse thread pattern ensures reliable engagement in plastic housings and soft materials, while the external hex drive accommodates standard installation tools for efficient assembly line operations. These partially threaded screws are particularly valuable in applications requiring precise clamping between specific components without thread interference in non-critical sections.

Specification Summary & Compliance

This 5/16"-18 x 3" nylon hex head screw features UNC coarse threading with Class 2A thread fit for standard industrial applications. The fastener maintains dimensional accuracy with specified head width of 1/2" and head height of 15/64" for consistent tool engagement. Manufacturing complies with RoHS 3 (2015/863/EU) regulations, ensuring environmental compliance for global markets. The partial threading extends to a minimum of 7/8" from the tip, while the right-hand thread direction follows conventional installation standards.