S-91221A137 6-32 x 3/8" 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 17,000 psi ensures reliable performance in demanding mechanical applications without failure
- Glass-filled nylon construction provides excellent chemical resistance and durability in harsh environments
- Wide temperature tolerance (-40° to 200°F) maintains structural integrity across extreme thermal conditions
- Class 2A thread fit with UNC coarse threading delivers secure fastening with consistent engagement and easy assembly
- Hex socket drive design enables precise torque application and prevents stripping during installation
- Full compliance with ASME B18.3 standards guarantees dimensional accuracy and interchangeability with other components
- RoHS 3 and REACH compliance ensures environmental safety and regulatory acceptance for global industrial use
Professional Applications & Engineering Value
These glass-filled nylon socket head cap screws solve critical engineering challenges where metal fasteners would corrode or conduct electricity. The 6-32 UNC thread with coarse spacing provides rapid installation in plastic assemblies, electronic enclosures, and chemical processing equipment. The black color offers UV resistance for outdoor applications, while the fully threaded design ensures maximum grip length. With 17,000 psi tensile strength and temperature resistance from -40° to 200°F, these screws maintain clamp force in automotive, aerospace, and marine environments where thermal cycling and chemical exposure are concerns. The hex drive allows for high-torque installation in confined spaces without compromising the socket head integrity.
Specification Summary & Compliance
This 3/8" length socket head cap screw features precise Class 2A thread fit per UNC standards with coarse thread spacing for optimal engagement. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming absence of restricted substances. The fully threaded rod type and standard socket head profile ensure consistent performance across industrial applications.
