S-90128A718 1/2"-13 x 1 3/4" 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 applications, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc plating protects against rust and environmental damage, extending service life in harsh conditions.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, minimizing loosening over time.
- High hardness (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use and adjustments.
- 3/8" hex drive design allows for easy installation and high torque application with standard tools, improving assembly efficiency.
- Fully threaded right-hand coarse UNC thread enables quick engagement and strong holding power in a wide range of materials.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety for global industrial applications.
Professional Applications & Engineering Value
Engineered for demanding environments, these zinc-plated alloy steel socket head cap screws deliver critical reliability where failure is not an option. The combination of 170,000 psi tensile strength and Rockwell C37 hardness provides exceptional resistance to shear forces and wear, making them ideal for heavy machinery, automotive assemblies, and structural frameworks. The UNC coarse thread with Class 3A fit ensures rapid installation and vibration resistance in steel, aluminum, and cast iron components. Zinc plating adds a protective barrier against moisture and chemicals, significantly extending service life in outdoor or corrosive industrial settings while maintaining consistent performance under extreme operational stresses.
Specification Summary & Compliance
This socket head cap screw features precision 1/2"-13 UNC coarse threads with Class 3A fit for superior thread engagement and dimensional accuracy. Manufactured to ASTM A574 specifications, it ensures consistent quality and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material traceability for industrial use worldwide.
