S-90044A190 1/2"-13 x 1 5/8" 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
- Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish extends service life in harsh environments, minimizing maintenance and replacement costs.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, enhancing joint integrity.
- High hardness rating (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use.
- Hex socket drive design allows for easy installation in confined spaces with standard tools, improving assembly efficiency.
- Full threading along the 1 5/8" length ensures consistent grip and load distribution across the entire fastener.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global supply chain compatibility.
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in heavy-duty machinery, automotive, and construction sectors. The UNC coarse thread and Class 3A fit provide superior resistance to loosening under dynamic loads, while the high tensile strength and Rockwell C37 hardness prevent stripping and deformation in high-torque applications. The corrosion-resistant black-oxide coating protects against rust in humid or chemically aggressive environments, ensuring long-term reliability. Ideal for precision assemblies requiring hex drive accessibility, these screws deliver consistent performance in demanding industrial fastening scenarios, from equipment frames to structural supports.
Specification Summary & Compliance
This socket head cap screw adheres to ASTM A574 specifications, with a 1/2"-13 UNC coarse thread and Class 3A thread fit for precise dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability. The product meets rigorous standards for tensile strength, hardness, and surface treatment, making it suitable for high-performance engineering applications.
