S-92865A360 1/2"-20 x 3" 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, ideal for high-stress industrial applications
- Superior corrosion resistance through zinc plating, extending service life in demanding environments
- Precise fine thread engagement with UNF 1/2"-20 threading and Class 2A fit for vibration-resistant connections
- Optimized torque transmission via external hex drive and 3/4" head width for secure installation
- Consistent mechanical properties with Rockwell C25 hardness and Grade 5 certification
- Full-length threading versatility allowing adjustable positioning across the entire 3" length
- Regulatory compliance assurance meeting both ASME B18.2.1/SAE J429 standards and RoHS 3 directives
Professional Applications & Engineering Value
These Grade 5 steel hex head screws deliver critical performance where structural integrity matters most. The UNF fine thread configuration (1/2"-20) provides superior resistance to vibrational loosening in heavy machinery, automotive assemblies, and construction equipment. The zinc plating creates a sacrificial barrier against oxidation, significantly extending service life in humid or outdoor environments. With full threading along the 3" length, engineers gain flexibility in component spacing while maintaining consistent clamping force. The external hex drive design ensures reliable torque application during installation, preventing cam-out incidents that compromise joint security in high-torque scenarios.
Specification Summary & Compliance
Manufactured to ASME B18.2.1/SAE J429 specifications with Class 2A thread fit tolerances for consistent mating with standard nuts. The Grade 5 classification guarantees mechanical properties including 120,000 psi tensile strength and Rockwell C25 hardness. Compliant with RoHS 3 (2015/863/EU) environmental directives, ensuring restricted substance adherence for global industrial applications.
