S-90128A728 1/2"-13 x 4" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
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 zinc plating, extending the screw's service life in harsh industrial environments.
- Precise Class 3A thread fit guarantees tight, secure fastening with minimal play, enhancing assembly accuracy and reliability.
- Partially threaded design allows for effective clamping force concentration where needed, improving joint stability.
- High hardness (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use and adjustments.
- Hex socket drive enables high torque application with standard tools, facilitating quick and secure installation.
- Compliance with RoHS 3 and REACH ensures environmental and safety standards are met, suitable for regulated industries.
Professional Applications & Engineering Value
This zinc-plated alloy steel socket head cap screw is engineered to address critical challenges in demanding industrial settings. Its UNC coarse thread and Class 3A fit provide superior grip and vibration resistance, making it ideal for machinery, automotive assemblies, and heavy equipment where loosening under dynamic loads is a concern. The partially threaded rod design concentrates clamping force effectively, reducing stress concentration and improving fatigue life. With a 170,000 psi tensile strength and Rockwell C37 hardness, it withstands extreme forces and abrasion, ensuring long-term reliability in construction, manufacturing, and aerospace applications. The hex drive allows for easy installation in confined spaces, enhancing efficiency in maintenance and production lines.
Specification Summary & Compliance
This socket head cap screw meets ASTM A574 specifications, ensuring high-quality manufacturing standards. It features a 1/2"-13 UNC coarse thread with Class 3A thread fit for precise dimensional accuracy and optimal performance. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming adherence to environmental and safety regulations for industrial use.
