S-91571A284 5/8"-11 x 6" ASME B18.2.6, ASTM A325, ASTM F3125 Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
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 120,000 psi ensures reliable performance in high-stress structural and construction applications.
- Grade A325 steel composition provides superior durability and resistance to shear and tension forces in demanding environments.
- Partially threaded design with UNC coarse threads offers optimal grip and easy installation while reducing the risk of thread stripping.
- External hex drive and hex head allow for straightforward tightening with standard tools, improving assembly efficiency.
- Class 2A thread fit guarantees precise dimensional accuracy and compatibility with standard nuts and components.
- Compliance with ASME B18.2.6, ASTM A325, and ASTM F3125 standards ensures consistent quality and reliability for industrial use.
- RoHS 3 and REACH compliant materials support environmental safety and regulatory adherence in global markets.
Professional Applications & Engineering Value
This high-strength Grade A325 hex head screw is engineered to address critical challenges in structural and heavy-duty applications, such as steel framing, bridge construction, and machinery assembly. The steel material and Rockwell C19 hardness provide excellent resistance to deformation and fatigue under dynamic loads, while the UNC coarse thread and partially threaded shank enhance clamping force and prevent loosening in vibrating environments. With a 6" length and external hex drive, it simplifies installation in tight spaces, reducing labor time and ensuring secure connections in industrial fastening systems. Ideal for projects requiring ASME B18.2.6 compliance, this fastener delivers long-term reliability and performance in demanding engineering scenarios.
Specification Summary & Compliance
This hex head screw features precise dimensions, including a 5/8"-11 UNC thread size with Class 2A thread fit for accurate engagement and a coarse thread spacing that supports quick assembly. It adheres to ASME B18.2.6, ASTM A325, and ASTM F3125 specifications, ensuring consistent manufacturing quality. Additionally, the product is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.
