S-92865A432 5/8"-18 x 1 1/4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 Steel Hex Head Screws
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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 load-bearing capacity with 120,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating, extending service life in harsh industrial environments
- Precise thread engagement with UNF fine spacing and Class 2A thread fit for secure, vibration-resistant connections
- Optimized torque transmission through the external hex drive design, allowing for efficient installation with standard tools
- Consistent mechanical properties with Rockwell C25 hardness, ensuring dimensional stability under stress
- Full threading coverage along the 1 1/4" length provides maximum grip and fastening versatility
- Right-hand thread orientation delivers conventional installation compatibility across industrial equipment
Professional Applications & Engineering Value
This Grade 5 steel hex head screw delivers critical engineering solutions where structural integrity matters most. The combination of UNF fine threading and Class 2A thread fit addresses vibration-induced loosening in machinery, automotive assemblies, and construction equipment. The zinc plated finish provides essential corrosion protection for outdoor applications or environments with moisture exposure. With its external hex drive and standardized dimensions, installers achieve proper clamping force without stripping, while the fully threaded design ensures uniform stress distribution across the entire fastened joint. These industrial hex bolts are engineered to maintain connection integrity in high-vibration settings where fastener failure is not an option.
Specification Summary & Compliance
Manufactured to ASME B18.2.1 and SAE J429 Grade 5 specifications with Class 2A thread fit tolerances. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features 5/8"-18 UNF fine threads with right-hand orientation and fully threaded 1 1/4" length construction.
