S-91221A115 2-56 x 1/2" 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
- Enhanced durability and strength with glass-filled nylon construction, resisting wear and deformation in demanding applications.
- Reliable performance across a wide temperature range from -20°F to 230°F, ensuring stability in varying environmental conditions.
- Secure and precise fastening thanks to 2-56 UNC coarse threads with Class 2A fit, reducing the risk of loosening and misalignment.
- Easy installation and removal with a 5/64" hex drive and standard socket head profile, allowing for efficient assembly with common tools.
- Corrosion-resistant and non-conductive properties of nylon plastic, ideal for electrical and chemical-exposed environments without risk of rust.
- Compliance with industry safety standards including UL 94 HB for flammability, RoHS 3, and REACH, ensuring environmental and regulatory adherence.
- Fully threaded right-hand design for consistent grip and uniform load distribution, enhancing joint integrity in assemblies.
Professional Applications & Engineering Value
These glass-filled nylon socket head cap screws are engineered to address common industrial challenges, such as corrosion, electrical insulation, and thermal fluctuations. The 2-56 UNC coarse threads with Class 2A fit provide reliable engagement in plastic or metal components, minimizing stripping and ensuring repeatable fastening in automated assembly lines. With a temperature range of -20° to 230° F, they perform consistently in applications from electronics enclosures to automotive subsystems, where off-white color and non-magnetic properties prevent interference. The hex drive and fully threaded design streamline maintenance, reducing downtime in industrial plastic fasteners for machinery, consumer goods, and regulatory-sensitive sectors.
Specification Summary & Compliance
This product adheres to precise dimensional standards, including UNC thread type with Class 2A thread fit for consistent accuracy. It meets UL 94 HB specifications for flammability resistance and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safety and environmental responsibility in global supply chains.
