S-99477A114 8-32 x 1/4" ASME B18.3, UL 94 HB Plastic Socket Head Screws
Plastic Socket 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
- High tensile strength of 4500 psi provides reliable fastening in demanding industrial applications
- Wide temperature resistance from -20° to 180°F ensures consistent performance across various operating environments
- Polypropylene plastic construction offers excellent corrosion resistance and electrical insulation properties
- Class 2A thread fit with UNC coarse threads enables quick installation and secure fastening
- Hex socket drive design with 9/64" drive size allows for easy access in confined spaces
- Full threading along the entire 1/4" length provides maximum grip and holding power
- Environmental compliance with RoHS 3 and REACH regulations ensures safe use in regulated industries
Professional Applications & Engineering Value
These polypropylene plastic socket head cap screws with 8-32 UNC threads deliver exceptional value in applications where metal fasteners would corrode or conduct electricity. The off-white plastic construction provides natural UV resistance and maintains integrity in chemical environments. The hex drive socket head design enables high torque application while the coarse thread pattern ensures rapid installation in plastic, wood, and composite materials. These fully threaded screws are ideal for electronics enclosures, food processing equipment, marine applications, and chemical handling systems where temperature resistance from -20° to 180°F is critical. The combination of 4500 psi tensile strength and plastic material benefits makes them perfect for lightweight assemblies requiring durable, non-conductive fastening solutions.
Specification Summary & Compliance
These socket head cap screws feature precision Class 2A thread fit with 8-32 UNC coarse threads and right-hand thread direction. Manufactured to ASME B18.3 specifications with standard socket head profile, 0.27" head diameter, and 0.164" head height. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental standards for industrial components. The 1/4" length and 9/64" hex drive provide consistent dimensional accuracy across all production batches.
