S-90128A139 5/16"-24 x 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 corrosion resistance with zinc-plated alloy steel construction, extending service life in harsh industrial environments.
- Exceptional tensile strength of 170,000 PSI ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Precise Class 3A fine thread fit provides secure, vibration-resistant connections for critical assemblies.
- Rockwell C37 hardness offers excellent wear resistance, maintaining thread integrity through repeated use.
- 1/4" hex drive socket head allows for easy installation and high torque application in confined spaces.
- Full thread coverage along the 1/2" length enables flexible positioning and consistent clamping force.
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptance.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 5/16"-24 UNF socket head cap screws deliver reliable fastening solutions where precision and durability are paramount. The zinc-plated alloy steel construction provides essential corrosion protection for machinery, automotive components, and outdoor equipment exposed to moisture or chemicals. With Class 3A fine threads, these screws maintain tight tolerances in vibration-prone assemblies, preventing loosening in critical systems. The 170,000 PSI tensile strength and Rockwell C37 hardness ensure these fasteners withstand extreme mechanical stresses without deformation, making them ideal for high-load applications in manufacturing, aerospace, and heavy equipment. The combination of right-hand threading and fully threaded design offers installation versatility while maintaining consistent clamping force across the entire engagement length.
Specification Summary & Compliance
This socket head cap screw features precision 5/16"-24 UNF fine threads with Class 3A thread fit for superior dimensional accuracy. Manufactured to ASTM A574 specification for high-strength socket head cap screws, it ensures consistent quality and performance. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting international standards for hazardous substance restrictions.
