S-90044A231 2 1/2"-4 x 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 under extreme loads, reducing the risk of fastener failure in demanding applications.
- Superior corrosion resistance from the black-oxide finish extends service life and maintains integrity in harsh industrial environments.
- High hardness rating (Rockwell C37) provides excellent wear resistance, minimizing deformation during installation and use.
- Coarse UNC threads with Class 2A fit allow for faster assembly and easier alignment, saving time and labor costs.
- Fully threaded design offers consistent clamping force along the entire length, enhancing joint stability in heavy-duty constructions.
- Large hex drive (1 3/4") enables high torque application with standard tools, ensuring secure fastening without slippage.
- Compliance with ASTM A574 and environmental regulations guarantees material quality and safe use in regulated industries.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this black-oxide alloy steel socket head cap screw addresses critical challenges in machinery, construction, and automotive sectors. The coarse UNC thread and Class 2A fit facilitate quick, precise assembly, reducing installation errors in high-vibration environments. With a fully threaded rod type, it distributes stress evenly, preventing joint loosening under dynamic loads. The black-oxide surface treatment combats corrosion, making it ideal for outdoor or humid conditions where durability is paramount. By meeting ASTM A574 specifications, it ensures consistent performance in structural fastening, minimizing downtime and maintenance costs for engineers and procurement teams.
Specification Summary & Compliance
This socket head cap screw features precise UNC coarse threads with Class 2A tolerance for reliable fit, and is manufactured in accordance with ASTM A574 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for global supply chains.
