S-90044A165 1/2"-13 x 2 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 tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Black-oxide coating on alloy steel provides corrosion resistance and a durable finish, extending service life in harsh industrial environments.
- Class 3A thread fit offers precise, tight tolerances for superior vibration resistance and secure fastening in critical assemblies.
- Coarse UNRC threads enable quick installation and easy alignment, saving time during assembly and maintenance operations.
- Hex socket drive design allows for high torque application with standard tools, minimizing stripping and improving installation efficiency.
- Full threading along the 2 3/4" length provides consistent grip and adjustability, ideal for applications requiring deep engagement.
- Rockwell C37 hardness ensures high durability and wear resistance, maintaining integrity under repeated loads.
Professional Applications & Engineering Value
This socket head cap screw is engineered from black-oxide alloy steel to address common industrial challenges such as corrosion, high stress, and vibration loosening. The coarse UNRC threads and Class 3A fit deliver exceptional holding power, making it ideal for heavy machinery, automotive assemblies, and construction equipment where reliability is critical. Its high tensile strength and hardness prevent deformation under extreme loads, while the hex drive facilitates easy installation in confined spaces. Suitable for demanding environments, this fastener ensures long-term performance and reduces maintenance needs, providing excellent value in engineering applications that require robust, precision fasteners.
Specification Summary & Compliance
This product features a 1/2"-13 thread size with Class 3A fit and coarse thread spacing, ensuring dimensional accuracy per industry standards. It complies with ASTM A574 specifications for high-strength socket head cap screws, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental and safety adherence for global industrial use.
