S-90044A144 5/16"-24 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 for reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments.
- Precision Class 3A thread fit ensures tight, secure fastening with minimal backlash, improving assembly accuracy.
- High hardness (Rockwell C37) provides excellent wear resistance, maintaining thread integrity over repeated use.
- Hex socket drive design allows for easy installation with standard tools, enhancing workflow efficiency.
- Fine UNRF threads offer better vibration resistance and holding power compared to coarse threads.
- Full compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global supply chains.
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in industrial assemblies where vibration, heavy loads, and corrosive conditions are common. The Class 3A thread fit and fine UNRF thread form deliver precise engagement, minimizing loosening in dynamic equipment such as machinery frames, automotive components, and precision tools. The high tensile strength and Rockwell C37 hardness ensure durability under cyclic stresses, while the black-oxide surface treatment provides a protective layer against oxidation and wear. Ideal for high-strength applications in manufacturing, aerospace, and heavy equipment, this fastener enhances reliability and reduces maintenance downtime.
Specification Summary & Compliance
This socket head cap screw features a 5/16"-24 fine thread with Class 3A precision tolerance for accurate fit, and is fully threaded for consistent holding power. It meets ASTM A574 specifications for high-strength alloy steel, ensuring material integrity and performance. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable use in industrial environments.
