S-90044A150 3/8"-16 x 3 1/2" 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
- Superior load-bearing capacity with 170,000 psi tensile strength for reliable performance in high-stress applications
- Enhanced corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in demanding environments
- Precise thread engagement with Class 3A fit and UNC coarse threads for faster assembly and reduced cross-threading risks
- High torque capability from the 5/16" hex drive and standard socket head profile, allowing secure installation with common tools
- Full-threaded design ensuring consistent clamping force along the entire 3 1/2" length for uniform stress distribution
- Optimized hardness at Rockwell C37 to resist wear and deformation under repeated use
- Regulatory compliance meeting ASTM A574, RoHS 3, and REACH standards for safe, industry-approved usage
Professional Applications & Engineering Value
This 3/8"-16 UNC Socket Head Cap Screw is engineered to address critical challenges in industrial assembly, machinery, and structural applications where vibration resistance and high clamp load are paramount. The black-oxide alloy steel construction combats rust and galling, while the Class 3A thread fit and coarse UNC thread form enable rapid, accurate installation—reducing assembly time and minimizing fastener failure risks. Its fully threaded design distributes mechanical stresses evenly, preventing joint loosening in dynamic environments. Ideal for heavy-duty equipment, automotive systems, and precision tooling, this screw delivers consistent performance where high tensile strength and durability are non-negotiable.
Specification Summary & Compliance
This socket head cap screw features a 3/8"-16 UNC coarse thread with Class 3A precision tolerance for secure fastening. Manufactured to ASTM A574 specifications, it ensures dimensional accuracy and mechanical reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial and commercial use without hazardous substance restrictions.
