S-90124A317 5/16"-18 x 3/4" ASME B18.2.1, SAE J429 Steel Wire-Lockable Hex Head Screws
Steel Wire-Lockable 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
- Enhanced corrosion resistance through black-oxide steel coating, extending service life in challenging environments
- Superior thread engagement with UNC coarse spacing and Class 2A fit for quick assembly and vibration resistance
- Optimized torque transmission via external hex drive design, preventing tool slippage during installation
- Full threading coverage along the 3/4" length ensures maximum grip strength and uniform stress distribution
- Wire locking capability provides additional security against loosening in high-vibration settings
- Industry-standard compliance with ASME B18.2.1 and RoHS 3 certifications for quality assurance
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this Grade 5 hex head screw delivers exceptional mechanical performance where reliability is critical. The black-oxide steel construction provides superior corrosion protection without compromising the 120,000 psi tensile strength, making it ideal for automotive assemblies, machinery frames, and structural connections exposed to moderate environmental conditions. The UNC coarse thread spacing combined with Class 2A thread fit ensures rapid installation and secure fastening in various materials, while the external hex drive design allows for high-torque application without cam-out. These fully threaded screws maintain consistent clamping force across the entire 3/4" length, preventing joint failure in vibration-prone environments common in manufacturing and construction sectors.
Specification Summary & Compliance
This 5/16"-18 UNC hex head screw features precise Class 2A thread fit tolerances and coarse thread spacing manufactured to ASME B18.2.1 specifications where applicable under SAE J429 standards. The fastener meets Grade 5 strength classification with verified Rockwell C25 hardness and maintains full compliance with RoHS 3 (2015/863/EU) environmental regulations, ensuring both mechanical performance and regulatory adherence for industrial applications.
