S-91221A157 10-32 x 1/2" 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
- Exceptional corrosion and chemical resistance due to glass-filled nylon construction, ideal for harsh environments without risk of rust or degradation.
- High tensile strength of 17,000 psi provides reliable clamping force and structural integrity for demanding assembly applications.
- Wide operating temperature range from -40° to 200°F ensures consistent performance in both extreme cold and high-heat conditions.
- Precise Class 2A thread fit with UNF fine threading offers superior vibration resistance and secure fastening in precision components.
- 5/32" hex socket drive design allows for easy installation with standard tools, reducing assembly time and improving efficiency.
- Fully threaded shank maximizes grip length and flexibility for various material thicknesses and adjustment needs.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.
Professional Applications & Engineering Value
Engineered for reliability in industrial plastic screws applications, this 10-32 UNF socket head cap screw addresses critical challenges like corrosion, chemical exposure, and electrical insulation needs. The glass-filled nylon plastic material provides a durable, lightweight alternative to metal, eliminating galvanic corrosion risks in assemblies involving dissimilar metals. Its fine thread spacing and Class 2A thread fit ensure tight, vibration-resistant connections in machinery, electronics, and automotive components. With a black color and fully threaded design, it offers consistent performance in temperature-sensitive environments, from outdoor equipment to electrical enclosures, enhancing longevity and reducing maintenance costs.
Specification Summary & Compliance
This screw features a 10-32 UNF thread size with Class 2A thread fit for precise dimensional accuracy, and a fully threaded rod type in the inch system. It complies with ASME B18.3 specifications for socket head cap screws, ensuring consistent manufacturing quality. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, confirming it is free from hazardous substances and safe for various industrial and consumer applications.
