S-90044A245 3-56 x 3/16" 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 ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in critical applications.
- Precision Class 3A fine threads provide superior fit and vibration resistance, minimizing loosening in dynamic or high-vibration environments.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance and a durable, non-reflective finish suitable for industrial settings.
- Hex socket drive design allows for high torque application and easy installation in confined spaces, improving assembly efficiency.
- Full threading along the entire length ensures maximum grip and uniform load distribution across the fastened components.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material consistency, environmental safety, and suitability for regulated industries.
- Rockwell C37 hardness provides excellent wear resistance and durability, extending the service life of the fastener.
Professional Applications & Engineering Value
These 3-56 UNF socket head cap screws are engineered to address common industrial challenges such as component loosening due to vibration and corrosion in harsh environments. The black-oxide alloy steel construction, combined with Class 3A fine threads, ensures a tight, secure fit that maintains integrity under dynamic loads. Ideal for precision machinery, automotive assemblies, and electronic enclosures, these screws offer reliable fastening where space is limited and high tensile strength is critical. The hex drive design facilitates easy installation with standard tools, reducing assembly time and improving maintenance efficiency in industrial applications.
Specification Summary & Compliance
This product adheres to Class 3A thread fit for precise dimensional accuracy and features a UNF fine thread profile. Manufactured in accordance with ASTM A574 specifications, it ensures consistent quality and performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms environmental safety and regulatory adherence for global supply chains.
