S-90044A197 5/8"-11 x 1 7/8" 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 applications, reducing the risk of fastener failure.
- Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in dynamic environments.
- Black-oxide surface treatment on alloy steel enhances corrosion resistance, extending service life in demanding industrial conditions.
- Rockwell C37 hardness offers excellent wear resistance, maintaining thread integrity through repeated assembly and disassembly.
- Hex socket drive design allows for high torque application and easy installation in confined spaces with standard tools.
- Full threading along the 1-7/8" length enables adjustable positioning and secure fastening across varying material thicknesses.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material consistency and environmental safety for global industrial use.
Professional Applications & Engineering Value
These black-oxide alloy steel socket head cap screws are engineered to address critical fastening challenges in heavy machinery, automotive assembly, and structural frameworks. The coarse UNC thread and Class 3A fit ensure rapid installation and high clamp load retention, preventing joint failure under vibration and shock loads. The alloy steel construction with controlled hardness resists shear and tensile stresses, while the black-oxide finish provides a durable barrier against rust and chemical exposure. Ideal for applications requiring high-strength fasteners with consistent performance in harsh environments, these screws reduce maintenance downtime and enhance operational reliability.
Specification Summary & Compliance
This socket head cap screw features a 5/8"-11 UNC coarse thread with Class 3A tolerance for precise fit, manufactured to ASTM A574 specifications for material and mechanical properties. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.
