S-90128A040 2-56 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 in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance with zinc-plated alloy steel construction, extending service life in harsh industrial environments.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, minimizing loosening over time.
- Hex socket drive design allows for easy installation and removal with standard tools, improving assembly efficiency and reducing labor time.
- High hardness rating (Rockwell C37) enhances wear resistance, maintaining thread integrity through repeated use and adjustments.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety, meeting strict industry and regulatory standards.
- Coarse UNC threads enable quicker installation and better grip in a variety of materials, speeding up production processes.
Professional Applications & Engineering Value
This 2-56 UNC Socket Head Cap Screw is engineered from zinc-plated alloy steel to address common industrial challenges such as vibration-induced loosening and corrosion in demanding environments. Its high tensile strength and Class 3A thread fit provide a secure, durable fastening solution for machinery, automotive, and electronics assemblies, where precision and reliability are critical. The hex drive and coarse thread design facilitate efficient installation, reducing assembly time and maintenance costs. Ideal for applications requiring consistent performance under stress, this screw ensures long-term stability and compliance with industry standards, making it a trusted choice for engineers and procurement specialists.
Specification Summary & Compliance
This product features a 2-56 UNC coarse thread with Class 3A fit for precise dimensional accuracy, manufactured in accordance with ASTM A574 specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for global industrial use.
