S-91251A844 3/4"-10 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 on alloy steel, extending service life in harsh industrial environments.
- Precise Class 3A thread fit with UNRC coarse threading provides secure, vibration-resistant connections for critical assemblies.
- High hardness rating (Rockwell C37) enhances wear resistance and durability under repetitive loads and extreme conditions.
- 5/8" hex drive design allows for easy installation and high torque application with standard tools, improving assembly efficiency.
- Full compliance with ASTM A574, RoHS 3, and REACH guarantees material consistency and environmental safety for global supply chains.
- Fully threaded shank offers uniform clamping force and versatility across various joint thicknesses.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this socket head cap screw addresses critical challenges in heavy machinery, automotive, and construction sectors. The black-oxide alloy steel construction combats corrosion and wear, while the UNRC coarse thread and Class 3A fit ensure tight, reliable fastening that resists loosening under vibration. With a 170,000 psi tensile strength and Rockwell C37 hardness, it provides a robust solution for high-load assemblies, reducing maintenance needs and enhancing operational safety. Ideal for use in equipment requiring high-strength fasteners with consistent performance in corrosive or high-stress environments.
Specification Summary & Compliance
This screw features a 3/4"-10 UNRC coarse thread with Class 3A thread fit for precise dimensional accuracy, and is manufactured to ASTM A574 specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for industrial components.
