S-91274A186 5/8"-11 x 1 3/4" ASME B18.3, ASTM A574, ASTM B117 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 corrosion resistance with zinc-flake coating, ideal for harsh industrial environments and extending service life.
- Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress and heavy-duty applications.
- Precise Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening.
- High hardness (Rockwell C37) offers excellent wear resistance and durability for repeated use.
- Fully threaded design allows for maximum adjustability and secure fastening across the entire length.
- Standard hex socket drive (1/2") enables easy installation and removal with common tools, even in confined spaces.
- Compliance with major standards including ASME B18.3, ASTM A574, and environmental regulations (RoHS 3, REACH) ensures quality and safety.
Professional Applications & Engineering Value
This zinc-flake-coated alloy steel socket head cap screw is engineered to address critical challenges in demanding industrial settings. The coarse UNC thread (5/8"-11) and Class 3A fit provide rapid assembly and superior clamp load retention, resisting vibration-induced failure in machinery, automotive, and construction applications. The high tensile strength (170,000 psi) and Rockwell C37 hardness ensure the fastener withstands extreme mechanical stresses without stripping or shearing. Its corrosion-resistant coating protects against rust and chemical exposure, making it suitable for outdoor or corrosive environments. The combination of a fully threaded shank and hex socket drive simplifies installation in tight spaces, reducing assembly time and improving maintenance efficiency for engineers and technicians.
Specification Summary & Compliance
This socket head cap screw features a 5/8"-11 UNC coarse thread with a Class 3A thread fit for precise dimensional accuracy and reliable performance. It is manufactured in accordance with ASME B18.3 and material specifications ASTM A574, ensuring consistent quality and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.
