S-91221A110 2-56 x 1/8" 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
- Corrosion-resistant construction using glass-filled nylon material eliminates rust and chemical degradation in demanding environments.
- Reliable performance across extreme temperatures from -20° to 230°F, ensuring fastener integrity in both cold and high-heat applications.
- Precise Class 2A thread fit with UNC coarse threads provides secure, vibration-resistant fastening and easy installation.
- 5/64" hex drive socket head design allows for high-torque application and access in confined spaces.
- UL 94 HB flammability rating offers enhanced safety for electrical and electronic assemblies.
- RoHS 3 and REACH compliance ensures environmental responsibility and global regulatory acceptance.
- Lightweight, non-conductive properties prevent electrical shorts and reduce overall assembly weight.
Professional Applications & Engineering Value
These glass-filled nylon socket head cap screws deliver critical solutions for industries where metal fasteners fail. The UL 94 HB rated material provides inherent corrosion resistance, eliminating galvanic corrosion in electrical enclosures and marine applications. With a temperature range of -20° to 230°F, they maintain dimensional stability in automotive under-hood components and outdoor equipment. The 2-56 UNC coarse threads and Class 2A fit ensure rapid assembly with reduced cross-threading risk, while the hex drive accommodates high torque in precision instruments and consumer electronics. Their non-magnetic, insulating properties make them ideal for sensitive medical devices and telecommunications hardware.
Specification Summary & Compliance
Manufactured to precise inch system measurements with Class 2A thread fit per UNC standards. Complies with UL 94 HB flammability requirements, RoHS 3 (2015/863/EU) for hazardous substance restriction, and REACH (EC 1907/2006) regulations. Thread specifications include right-hand direction, coarse spacing, and fully threaded design for consistent engagement.
