S-92865A589 5/16"-18 x 1 3/4" 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
- Superior load-bearing capacity with 120,000 psi tensile strength, ensuring reliable performance in demanding applications
- Enhanced corrosion resistance from zinc plating, extending service life in harsh industrial environments
- Precise Class 2A thread fit for smooth assembly and secure fastening with reduced risk of cross-threading
- High-strength Grade 5 steel construction with Rockwell C25 hardness, providing excellent durability and wear resistance
- External hex drive design allows for high-torque installation using standard tools, improving installation efficiency
- Fully threaded UNC coarse spacing ensures maximum grip length and faster installation in various materials
- Compliance with major industry standards including ASME B18.2.1 and SAE J429, guaranteeing quality and interchangeability
Professional Applications & Engineering Value
This Grade 5 steel hex head screw delivers exceptional engineering value through its robust material properties and zinc plated finish that combats corrosion in demanding environments. The UNC coarse thread with Class 2A fit provides reliable engagement in steel frameworks, machinery assembly, and structural applications where vibration resistance is critical. With fully threaded design and external hex drive, it enables rapid installation and maximum clamping force distribution. Engineers specify these high-strength screws for heavy-duty industrial equipment, construction projects, and automotive applications where 120,000 psi tensile strength ensures joint integrity under sustained loads and dynamic stresses.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse thread specifications. Complies with ASME B18.2.1 and SAE J429 standards for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features 5/16"-18 thread size with 1 3/4" length and external hex drive configuration for standardized installation.
