S-92929A131 4-40 x 5/16" ASME B18.6.3 Plastic Slotted Flat Head Screws
Plastic Slotted Flat 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 from nylon plastic construction, eliminating rust and chemical degradation in harsh environments
- Excellent electrical insulation properties for safe use in electrical assemblies and sensitive electronic applications
- Precision Class 2A thread fit ensures smooth installation and reliable fastening performance in UNC coarse thread applications
- Wide temperature tolerance from -40° to 185°F maintains structural integrity across diverse operating conditions
- Standard 100° countersink angle provides flush mounting and clean aesthetic finish in assembled components
- Full threading design delivers maximum grip length and uniform load distribution along the entire fastener
- Industry compliance assurance with ASME B18.6.3 specifications and RoHS 3 environmental standards
Professional Applications & Engineering Value
Engineered for precision assemblies requiring non-conductive, corrosion-resistant fastening solutions, these nylon plastic flat head screws solve critical challenges in electrical enclosures, marine equipment, and chemical processing applications. The 4-40 UNC coarse threading with Class 2A fit provides optimal engagement in plastic and soft materials while preventing cross-threading. The slotted drive style accommodates standard installation tools, and the fully threaded design ensures consistent clamping force across the entire 5/16" length. With operational capability from -40° to 185°F, these fasteners maintain dimensional stability in both freezing and elevated temperature environments where metal alternatives would fail.
Specification Summary & Compliance
This 4-40 UNC flat head screw features precision Class 2A thread fit with coarse thread spacing and right-hand thread direction. Manufactured to ASME B18.6.3 specifications with a standard 100° countersink angle and fully threaded design. Compliant with RoHS 3 (2015/863/EU) environmental regulations, ensuring restriction of hazardous substances in electronic and industrial applications.
