S-90128A581 5/16"-18 x 3/4" 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.
- Zinc-plated alloy steel construction provides superior corrosion resistance, extending service life in harsh industrial environments.
- Class 3A thread fit guarantees precise, secure fastening with minimal play, ideal for critical assemblies requiring tight tolerances.
- Fully threaded design allows for consistent engagement along the entire length, offering versatile installation and uniform clamping force.
- 1/4" hex drive and standard socket head enable easy installation with common tools, reducing assembly time and improving efficiency.
- Rockwell C37 hardness enhances durability and wear resistance, maintaining integrity under repeated loads and vibrations.
- Compliance with ASTM A574, RoHS 3, and REACH ensures adherence to industry standards for safety and environmental regulations.
Professional Applications & Engineering Value
This 5/16"-18 UNC socket head cap screw is engineered to address common industrial challenges, such as vibration-induced loosening and corrosion in demanding settings. Made from zinc-plated alloy steel, it offers robust protection against rust and wear, making it suitable for machinery, automotive, and construction applications. The coarse thread and Class 3A fit provide quick, secure fastening with high tensile strength, reducing maintenance needs and downtime. Its fully threaded and right-hand thread design ensures uniform stress distribution, enhancing joint reliability in heavy-duty assemblies where precision and durability are critical.
Specification Summary & Compliance
This socket head cap screw features a 5/16"-18 UNC coarse thread with Class 3A fit for precise dimensional accuracy, adhering to ASTM A574 manufacturing standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.
