S-91221A135 6-32 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 (17,000 psi) ensures reliable load-bearing capacity in demanding applications
- Temperature resistance from -40° to 200°F maintains structural integrity across extreme operating environments
- Glass-filled nylon construction provides excellent corrosion resistance and electrical insulation properties
- Class 2A thread fit with UNC coarse threading delivers secure fastening and easy installation in various materials
- Hex socket drive design (7/64") enables high-torque application and prevents stripping during assembly
- Full threading along the entire 1/4" length allows for maximum adjustment and holding power
- Compliance with ASME B18.3, RoHS 3, and REACH standards ensures quality, safety, and environmental responsibility
Professional Applications & Engineering Value
These glass-filled nylon socket head cap screws solve critical engineering challenges where metal fasteners fail. The black plastic composition eliminates galvanic corrosion in electrical assemblies and chemical environments, while providing essential electrical insulation. The 6-32 UNC coarse thread with Class 2A fit ensures reliable engagement in plastics, composites, and soft metals without stripping threads. The hex drive socket head design accommodates high installation torque, making these screws ideal for electronics enclosures, automotive components, and industrial equipment requiring vibration resistance and thermal stability across the -40° to 200°F operating range.
Specification Summary & Compliance
This socket head cap screw features precise Class 2A thread fit with UNC coarse threading (6-32 size) and meets ASME B18.3 manufacturing specifications. The fully threaded 1/4" length maintains dimensional accuracy throughout the fastener. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and restricted substance control for global industrial applications.
