S-90044A147 3/8"-16 x 2 1/4" 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 in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish extends service life in demanding industrial environments.
- Precision Class 3A coarse threads provide excellent fit and vibration resistance, minimizing loosening over time.
- 5/16" hex drive design allows for high torque application and easy installation in confined spaces.
- Fully threaded construction offers consistent clamping force along the entire length for secure fastening.
- Rockwell C37 hardness maintains dimensional stability under heavy loads, ensuring long-term durability.
- Compliance with RoHS 3 and REACH guarantees environmental safety and regulatory acceptance for global supply chains.
Professional Applications & Engineering Value
These black-oxide alloy steel socket head cap screws deliver critical engineering value in applications where strength and reliability are paramount. The combination of ASTM A574 material standards and Class 3A UNRC coarse threads ensures precise fitment in heavy machinery, automotive assemblies, and industrial equipment. The fully threaded design with 3/8"-16 thread size provides uniform stress distribution, effectively resisting vibrational loosening in dynamic environments. The 5/16" hex drive facilitates efficient installation with standard tools, reducing assembly time while maintaining 170,000 psi tensile strength for demanding structural connections. This makes them ideal for OEM manufacturing and maintenance operations requiring consistent performance under extreme conditions.
Specification Summary & Compliance
This socket head cap screw features precision Class 3A thread fit with UNRC coarse threads (3/8"-16), manufactured to ASTM A574 specifications. The fastener maintains dimensional accuracy with Rockwell C37 hardness and meets regulatory requirements including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, ensuring suitability for industrial applications worldwide.
