S-90124A626 3/8"-16 x 1 1/4" 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
- Superior corrosion resistance through zinc-plated steel construction, extending service life in harsh environments
- Optimized installation efficiency with external hex drive design providing secure tool engagement and torque transmission
- Enhanced thread reliability through Class 2A thread fit and UNC coarse threading for consistent engagement and vibration resistance
- Proven structural integrity with Rockwell C25 hardness maintaining dimensional stability under stress
- Broad compatibility with standard 9/16" wrench sizes and 3/8"-16 UNC threading for seamless integration
- Full regulatory compliance meeting industrial standards including ASME B18.2.1 and environmental regulations
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver critical performance where structural integrity matters most. The zinc-plated steel construction provides essential corrosion protection for machinery, equipment frames, and structural assemblies exposed to demanding environments. The UNC coarse threading and Class 2A thread fit ensure reliable engagement in steel-to-steel connections, while the external hex drive design allows for high-torque installation without stripping. With full threading along the 1-1/4" length, these fasteners distribute clamping forces evenly, making them ideal for construction, manufacturing, and automotive applications requiring 120,000 psi tensile strength and consistent performance under vibration and dynamic loads.
Specification Summary & Compliance
This 3/8"-16 UNC hex head screw features Class 2A thread fit for standard clearance applications and is manufactured to Grade 5 specifications with Rockwell C25 hardness. The fastener complies with ASME B18.2.1 and SAE J429 standards for dimensional accuracy and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring suitability for regulated industrial markets.
