S-92865A587 5/16"-18 x 1 1/2" 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 tensile strength of 120,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance with zinc plating prolongs service life in harsh or outdoor environments, minimizing maintenance needs.
- High hardness rating (Rockwell C25) provides excellent wear resistance, maintaining thread integrity through repeated use.
- Coarse UNC threading offers faster installation and better performance in materials prone to stripping or cross-threading.
- Class 2A thread fit ensures consistent, reliable engagement with standard nuts and tapped holes for simplified assembly.
- External hex drive design allows for high torque application with common tools, speeding up installation and removal.
- Full threading along the entire 1½" length provides maximum grip and adjustment flexibility in various material thicknesses.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these Grade 5 hex head screws deliver critical performance where vibration resistance and structural integrity are paramount. The zinc plated steel construction combats corrosion in manufacturing facilities, construction sites, and outdoor equipment assemblies, while the coarse UNC thread pattern prevents loosening under dynamic loads. With 120,000 psi tensile strength and Rockwell C25 hardness, these fully threaded fasteners maintain clamping force in heavy machinery, structural frameworks, and automotive components, solving common challenges of joint failure and material fatigue. The external hex drive accommodates standard wrenches for efficient installation in confined spaces.
Specification Summary & Compliance
This 5/16"-18 UNC hex head screw features Class 2A thread fit per ASME/ANSI standards, ensuring precise dimensional accuracy and interchangeability. Manufactured to meet ASME B18.2.1 and SAE J429 Grade 5 specifications for consistent quality and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted hazardous substances.
