S-90044A111 4-40 x 1" 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 provided by the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
- Precise Class 3A thread fit guarantees secure, vibration-resistant connections, minimizing loosening in dynamic assemblies.
- High hardness rating (Rockwell C37) enhances wear resistance and durability, maintaining thread integrity through repeated use.
- Standard hex socket drive (3/32") allows for easy installation and removal with common tools, improving assembly efficiency.
- Coarse UNC threads enable quick engagement and reduced cross-threading risks, speeding up production processes.
- Full compliance with ASTM A574, RoHS 3, and REACH ensures material consistency and environmental safety for global supply chain integration.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this black-oxide alloy steel socket head cap screw combines high tensile strength and corrosion resistance to address common challenges like vibration-induced loosening and environmental degradation. Its 4-40 UNC coarse threads and Class 3A fit provide reliable fastening in machinery, automotive, and aerospace assemblies, where precision and durability are critical. The standard hex drive facilitates secure torque application, reducing installation errors. Ideal for applications requiring fully threaded fasteners, it ensures uniform load distribution and long-term performance in high-stress environments, supported by compliance with industry standards for quality assurance.
Specification Summary & Compliance
This socket head cap screw adheres to inch system dimensions with a Class 3A thread fit for precise tolerance. It meets ASTM A574 specifications for material and manufacturing, ensuring consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and global industrial use without hazardous substances.
