S-92865A154 1/4"-20 x 1 7/8" 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 load-bearing capacity with 120,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating, extending service life in harsh industrial environments
- Optimized thread engagement with Class 2A UNC coarse threads ensuring secure fastening and easy installation
- Enhanced torque transmission via external hex drive design for efficient assembly with standard tools
- Controlled thread distribution through partial threading for precise clamping force in specific applications
- Consistent mechanical properties with Rockwell C25 hardness maintaining dimensional stability under stress
- Regulatory compliance assurance meeting ASME B18.2.1, RoHS 3, and REACH standards for quality and safety
Professional Applications & Engineering Value
Engineered for heavy-duty industrial and construction applications, these Grade 5 hex head screws deliver exceptional performance where structural integrity is paramount. The zinc plated steel construction provides critical corrosion protection in exposed environments, while the 1/4"-20 UNC coarse thread configuration ensures rapid installation and reliable holding power in various materials. The partially threaded design concentrates clamping force precisely where needed, preventing joint loosening under vibration and dynamic loads. These external hex drive fasteners accommodate standard wrenching tools, streamlining assembly processes in manufacturing, machinery assembly, and structural steel applications where high tensile strength and consistent performance are non-negotiable requirements.
Specification Summary & Compliance
This 1/4"-20 hex head screw features precise Class 2A thread fit per UNC standards with 1-7/8" length and 3/4" minimum thread length. Manufactured to ASME B18.2.1 specifications and meeting SAE J429 Grade 5 requirements, it ensures dimensional accuracy and mechanical reliability. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring certified components.
