S-91251A720 1/2"-13 x 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
- Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Precise Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in dynamic environments.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance, extending service life in demanding industrial conditions.
- Full threading along the 2" length allows for maximum adjustability and secure fastening in a wide range of material thicknesses.
- Hex socket drive design enables high torque application and easy installation in confined spaces, improving assembly efficiency.
- Coarse UNC thread form facilitates quick assembly and disassembly, saving time in maintenance and production cycles.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency and environmental safety for global industrial use.
Professional Applications & Engineering Value
This 1/2"-13 UNC Socket Head Cap Screw is engineered to address critical challenges in heavy machinery, automotive, and construction assemblies. The black-oxide alloy steel construction, combined with a Rockwell C37 hardness, provides exceptional resistance to wear and fatigue, making it ideal for high-vibration environments. The coarse thread and fully threaded design ensure rapid installation and robust clamping force, reducing assembly time while maintaining integrity under dynamic loads. Its hex drive allows for precise torque control in tight spaces, preventing stripping and ensuring consistent performance in industrial applications where reliability is paramount.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC thread with Class 3A fit for high precision and a coarse thread spacing. It meets ASTM A574 specifications for alloy steel socket head cap screws, ensuring dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, it supports sustainable and safe usage in regulated industries.
