S-90124A718 1/2"-13 x 1 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 corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
- Superior load-bearing capability from Grade 5 classification and 120,000 psi tensile strength for reliable heavy-duty applications
- Optimized installation efficiency with external hex drive and 3/4" head width for secure tool engagement and torque transfer
- Consistent thread engagement through Class 2A thread fit and UNC coarse threading, reducing cross-threading risks
- Full-length thread coverage across the 1 3/4" length ensures maximum grip strength in various material thicknesses
- Enhanced durability with Rockwell C25 hardness, maintaining structural integrity under repeated stress
- Regulatory compliance assurance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
Engineered for heavy-duty industrial assemblies, these Grade 5 zinc-plated steel hex head screws deliver critical performance where vibration resistance and structural integrity are paramount. The UNC coarse thread design prevents loosening in dynamic applications while the external hex drive enables high-torque installation with standard tools. The zinc plating provides essential corrosion protection for outdoor equipment, machinery frames, and structural steel connections. With fully threaded construction and Class 2A thread fit, these fasteners ensure consistent clamping force across varying material thicknesses, making them ideal for construction, automotive, and manufacturing applications requiring reliable, high-strength fastening solutions.
Specification Summary & Compliance
This 1/2"-13 UNC hex head screw features Class 2A thread fit tolerance for consistent engagement and meets ASME B18.2.1 and SAE J429 Grade 5 specifications. Manufacturing compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. The fastener maintains dimensional accuracy with 1 3/4" length, 0.5" thread diameter, and coarse thread spacing per unified thread standards.
