S-91251A365 7/16"-14 x 1 3/8" 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 black-oxide coating, extending service life in harsh industrial environments
- Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress applications
- Precision Class 3A thread fit provides superior engagement and vibration resistance in critical assemblies
- Rockwell C37 hardness rating delivers excellent wear resistance and durability through repeated use
- Standard hex socket drive allows for high torque application and easy installation in confined spaces
- Full threading along entire length enables flexible positioning and secure fastening at any point
- Comprehensive compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety
Professional Applications & Engineering Value
These black-oxide alloy steel socket head cap screws deliver critical performance advantages for demanding industrial applications. The 7/16"-14 UNC coarse thread configuration with Class 3A precision ensures reliable fastening in high-vibration environments common in heavy machinery, automotive assemblies, and industrial equipment. The black-oxide surface treatment provides essential corrosion protection while maintaining dimensional stability, solving common oxidation problems in manufacturing facilities. With 170,000 psi tensile strength and Rockwell C37 hardness, these fasteners withstand extreme mechanical stresses without compromising integrity, making them ideal for critical structural connections where failure is not an option. The combination of hex drive convenience and fully threaded design streamlines installation processes while providing maximum holding power throughout the fastener length.
Specification Summary & Compliance
This socket head cap screw features 7/16"-14 UNC coarse threads with Class 3A thread fit for precision engagement, manufactured to ASTM A574 specification for high-strength alloy steel fasteners. The product maintains dimensional accuracy with 1 3/8" length and 3/8" hex drive compatibility. Compliance includes RoHS 3 (2015/863/EU) for hazardous substance restriction and REACH (EC 1907/2006) for chemical safety, ensuring environmental responsibility in industrial supply chains.
