S-91583A154 5/8"-11 x 4 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
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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 corrosion resistance through hot-dipped galvanized steel construction, extending service life in harsh environments
- Superior structural integrity with Grade A325 certification and 120,000 psi tensile strength for heavy-duty applications
- Optimized clamping force from the partially threaded design with 3 1/4" grip length for secure connections
- Reliable thread engagement with UNC coarse threads and Class 2A fit ensuring consistent performance
- Easy installation and removal with external hex drive and standard 1 1/16" head width for common tools
- Enhanced durability with Rockwell C19 hardness providing excellent wear resistance
- Broad compliance coverage meeting multiple industry standards for quality assurance
Professional Applications & Engineering Value
These Grade A325 hex head screws deliver critical performance for structural and heavy industrial applications where failure is not an option. The hot-dipped galvanized steel construction provides superior corrosion protection, making them ideal for outdoor structures, bridges, and industrial equipment exposed to environmental elements. The partially threaded design with substantial grip length concentrates clamping force where needed most, preventing joint loosening under vibration and dynamic loads. With UNC coarse threads and Class 2A thread fit, these fasteners offer reliable installation in various materials while maintaining consistent torque values. The combination of 120,000 psi tensile strength and external hex drive ensures these bolts can withstand extreme loads while allowing for straightforward installation using standard tools common in construction and manufacturing environments.
Specification Summary & Compliance
This 5/8"-11 hex head screw features precise Class 2A thread fit tolerances with UNC coarse threading standards. Manufacturing complies with ASME B18.2.6, ASTM A325, and ASTM F3125 specifications for structural bolting applications. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental responsibility and regulatory adherence for global industrial markets.
