S-92865A556 1/4"-20 x 3 1/2" 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 heavy-duty 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 vibration resistance
- Enhanced installation efficiency featuring external hex drive design for straightforward wrench access and torque application
- Consistent mechanical properties with Rockwell C25 hardness maintaining dimensional stability under stress
- Full-length threading providing maximum grip length and flexibility in various material thicknesses
- Regulatory compliance assurance meeting ASME B18.2.1 specifications for quality and performance standards
Professional Applications & Engineering Value
These Grade 5 steel hex head screws deliver critical engineering solutions where structural integrity and corrosion resistance are paramount. The zinc plated finish provides essential protection against oxidation in manufacturing facilities, outdoor equipment, and marine applications. The 1/4"-20 UNC coarse thread design significantly reduces cross-threading risks during assembly while maintaining strong holding power in steel frameworks, machinery bases, and construction projects. With fully threaded configuration and external hex drive, these fasteners enable rapid installation and consistent clamping force distribution across the entire 3½" length, making them ideal for structural connections, heavy equipment maintenance, and industrial assembly lines requiring dependable, high-strength fastening solutions.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse thread specifications ensuring compatibility with standard mating components. These hex head screws conform to ASME B18.2.1 dimensional standards and SAE J429 Grade 5 mechanical requirements. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming restricted substance adherence for global industrial applications.
