S-91251A138 3/4"-10 x 3 3/4" 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 load-bearing capacity with 170,000 psi tensile strength for reliable performance in high-stress assemblies.
- Superior corrosion resistance due to the black-oxide finish on alloy steel, extending service life in harsh environments.
- Precise thread engagement with Class 3A fit and coarse UNRC threading, ensuring secure fastening and vibration resistance.
- Optimized drive efficiency via the 5/8" hex socket head, allowing high torque application without slippage.
- Enhanced durability from Rockwell C37 hardness, maintaining structural integrity under repeated loads.
- Versatile partial threading for combined clamping and alignment functions in varied industrial setups.
- Regulatory compliance with ASTM A574, RoHS 3, and REACH, guaranteeing safety and environmental standards.
Professional Applications & Engineering Value
This 3/4"-10 Socket Head Cap Screw delivers critical engineering solutions where high tensile strength and corrosion protection are paramount. Crafted from black-oxide alloy steel, it combats wear and oxidation in demanding sectors like heavy machinery, automotive, and construction. The coarse UNRC thread and Class 3A fit provide rapid installation and robust clamping force, minimizing loosening in dynamic applications. Its partially threaded design allows precise positioning, while the hex drive socket head ensures accessibility in confined spaces. Ideal for assemblies requiring 170,000 psi tensile strength and compliance with industrial specifications, this fastener enhances reliability and reduces maintenance cycles.
Specification Summary & Compliance
The screw adheres to inch system dimensions with a Class 3A thread fit for tight tolerances and coarse threading (3/4"-10) per UNRC standards. It meets ASTM A574 manufacturing guidelines for high-strength socket head cap screws and is verified as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring environmental safety and material sustainability.
