S-91583A618 5/8"-11 x 5 1/2" 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
- Superior corrosion resistance through hot-dipped galvanized steel coating, extending service life in harsh environments
- Exceptional structural integrity with 120,000 psi tensile strength, ideal for heavy-duty applications
- Reliable thread engagement with Class 2A thread fit ensuring precise installation and vibration resistance
- Optimized hardness performance at Rockwell C19, providing excellent durability under load
- Enhanced grip strength with 4 1/4" grip length for secure fastening in structural connections
- Industry-standard compliance meeting ASME B18.2.6, ASTM A325, and ASTM F3125 specifications
- Environmental responsibility with RoHS 3 and REACH compliance for sustainable operations
Professional Applications & Engineering Value
This Grade A325 hex head screw delivers critical engineering value for structural applications where failure is not an option. The hot-dipped galvanized steel construction provides superior protection against corrosion in outdoor and industrial environments, significantly extending maintenance cycles. The 5/8"-11 UNC coarse thread design ensures rapid installation and superior resistance to vibration loosening, while the partial threading concentrates strength where needed most. With 120,000 psi tensile strength and Rockwell C19 hardness, this heavy-duty fastener maintains structural integrity under extreme loads, making it ideal for construction, bridge work, and industrial machinery where reliability is paramount. The external hex drive facilitates easy installation with standard tools, reducing labor time while ensuring proper torque application.
Specification Summary & Compliance
This 5/8"-11 hex head screw features precise Class 2A thread fit tolerances with UNC coarse thread specification, ensuring consistent performance across applications. Manufacturing complies with ASME B18.2.6 dimensional standards and material specifications per ASTM A325 and ASTM F3125. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry requirements for sustainable manufacturing practices.
