S-90128A050 2-56 x 1/2" ASTM A574 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
- Superior tensile strength of 170,000 PSI ensures reliable performance under high-stress conditions, minimizing the risk of fastener failure.
- Exceptional hardness (Rockwell C37) provides excellent wear resistance and maintains thread integrity during repeated assembly and disassembly.
- Zinc-plated alloy steel construction offers enhanced corrosion resistance, extending the screw's service life in harsh industrial environments.
- Class 3A thread fit with UNC coarse threading delivers precise, secure fastening with reduced cross-threading risk for efficient installations.
- Hex socket drive design allows for high torque application and easy access in confined spaces, improving assembly speed and tool compatibility.
- Full threading along the 1/2" length ensures maximum grip and uniform load distribution across the entire fastener.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material consistency, environmental safety, and suitability for regulated industries.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this Socket Head Cap Screw combines zinc-plated alloy steel with a high-strength design to address common challenges like vibration loosening and corrosion in machinery, automotive, and aerospace assemblies. The UNC coarse thread and Class 3A fit provide quick, reliable fastening, reducing installation time while maintaining joint integrity. Its hex drive socket head facilitates secure tool engagement in tight spaces, ideal for precision equipment where access is limited. By meeting rigorous standards, this screw ensures long-term durability and performance in critical industrial fastening scenarios, from heavy-duty fixtures to electronic enclosures.
Specification Summary & Compliance
This screw adheres to precise dimensional tolerances, including a Class 3A thread fit and UNC coarse thread spacing for consistent performance. It conforms to ASTM A574 specifications for high-strength bolts, ensuring material and manufacturing quality. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety standards in global industrial applications.
