S-92865A174 1/4"-20 x 5 1/4" 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
- Enhanced load-bearing capacity with Grade 5 classification and 120,000 psi tensile strength for reliable performance in high-stress environments.
- Superior corrosion resistance from zinc plating, extending service life in humid or outdoor industrial settings.
- Optimized thread engagement through UNC coarse threading and Class 2A fit, ensuring secure fastening and reduced cross-threading risks.
- Efficient installation and removal with external hex drive and 7/16" head width, compatible with standard wrenches for quick assembly.
- Controlled clamping force due to partial threading, providing better grip and vibration resistance in structural applications.
- Consistent dimensional accuracy meeting ASME B18.2.1 and SAE J429 standards, guaranteeing interchangeability and fit.
- Environmentally compliant construction adhering to RoHS 3 and REACH regulations, safe for use in regulated industries.
Professional Applications & Engineering Value
This Grade 5 hex head screw is engineered to address common industrial challenges such as joint failure under dynamic loads and corrosion-induced degradation. The zinc plated steel construction provides a protective barrier against rust, ideal for machinery, automotive assemblies, and construction frameworks exposed to harsh conditions. With a coarse UNC thread and partial threading design, it ensures rapid installation and superior resistance to loosening in high-vibration environments like heavy equipment and structural steel connections. The external hex drive allows for high torque application, facilitating secure fastening in tight spaces while maintaining 120,000 psi tensile strength for long-term reliability in demanding B2B applications.
Specification Summary & Compliance
This fastener features a 1/4"-20 UNC coarse thread with Class 2A fit for precise dimensional tolerance, ensuring consistent performance. It complies with ASME B18.2.1 and SAE J429 manufacturing specifications, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming its suitability for industrial and international use.
