S-91864A062 1/4"-20 x 7/16" 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
- Superior thread fit with Class 3A precision ensures tight, secure fastening and vibration resistance
- Corrosion-resistant black-oxide coating extends service life in demanding industrial environments
- High Rockwell C37 hardness provides excellent wear resistance and durability
- Fully threaded design offers maximum grip and holding power along the entire length
- Hex socket drive compatibility allows for easy installation in confined spaces with standard tools
- Coarse UNC thread profile enables quick assembly and disassembly while maintaining strength
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these black-oxide alloy steel socket head cap screws deliver exceptional performance where reliability is critical. The 1/4"-20 UNC coarse thread configuration combined with Class 3A thread fit provides superior vibration resistance in machinery, automotive assemblies, and heavy equipment. The corrosion-resistant black-oxide surface treatment protects against environmental degradation while maintaining dimensional stability. With 170,000 PSI tensile strength and Rockwell C37 hardness, these fasteners withstand extreme mechanical stresses in aerospace, manufacturing, and construction applications where failure is not an option. The hex socket drive design ensures secure tool engagement for precise torque application in confined spaces.
Specification Summary & Compliance
This precision fastener features 1/4"-20 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and holding power. Manufactured to ASTM A574 specifications for high-strength socket head cap screws, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, meeting the latest industry standards for safety and environmental responsibility. The fully threaded design with right-hand thread direction provides maximum engagement strength across the entire 7/16" length.
