S-91274A048 8-32 x 1/4" ASME B18.3, ASTM A574, ASTM B117 Alloy Steel Socket Head Screws
Alloy Steel 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 tensile strength of 170,000 PSI ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc-flake coating protects against harsh industrial environments, extending service life.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies in critical applications.
- Fully threaded design offers consistent engagement along the entire length, improving load distribution and fastening integrity.
- High hardness (Rockwell C37) enhances wear resistance and durability, minimizing damage during installation and use.
- Hex socket drive allows for easy installation with standard tools, reducing assembly time and improving efficiency.
- Compliance with ASME B18.3 and ASTM A574 ensures consistent quality and interoperability with other standardized components.
Professional Applications & Engineering Value
These 8-32 UNC socket head cap screws are engineered to address common industrial challenges, such as vibration loosening and corrosion in demanding environments. Made from zinc-flake-coated alloy steel, they provide excellent protection against rust and chemical exposure, making them ideal for machinery, automotive, and aerospace assemblies. The coarse thread spacing and Class 3A thread fit ensure quick, secure fastening with minimal risk of cross-threading, while the fully threaded rod type allows for uniform stress distribution. This design is particularly valuable in applications requiring high tensile strength and reliability, such as precision equipment and structural frameworks, where consistent performance under load is critical.
Specification Summary & Compliance
This product features precise Class 3A thread fit per UNC standards, with a thread size of 8-32 and coarse spacing for efficient assembly. It complies with ASME B18.3 and ASTM A574 specifications, ensuring dimensional accuracy and mechanical properties. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its environmental and safety compliance for global industrial use.
