S-92865A364 1/2"-20 x 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
- 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 various industrial environments
- Precision thread engagement with Class 2A UNF fine threads ensuring secure fastening and vibration resistance
- High-strength construction meeting Grade 5 standards with Rockwell C25 hardness for consistent durability
- Optimal torque transmission through external hex drive design for efficient installation and removal
- Full threading along 4" length providing maximum grip and adjustment flexibility in assembly
- Industry-standard compliance with ASME B18.2.1 and SAE J429 specifications for guaranteed interoperability
Professional Applications & Engineering Value
These Grade 5 hex head screws deliver critical performance advantages for heavy-duty industrial applications where failure is not an option. The combination of high-tensile steel construction and zinc plating addresses common challenges of structural integrity and environmental degradation in machinery, construction, and manufacturing equipment. The 1/2"-20 UNF fine thread configuration provides superior resistance to loosening under vibration, while the external hex drive enables high-torque installation without stripping. These fully threaded fasteners ensure maximum thread engagement across the entire 4" length, making them ideal for applications requiring precise clamping force distribution and reliable industrial fastening solutions.
Specification Summary & Compliance
Manufactured to exacting ASME B18.2.1 and SAE J429 standards, these hex head screws feature Class 2A thread fit tolerances for consistent mating with corresponding nuts and threaded components. The UNF fine thread specification (1/2"-20) ensures precise engagement, while the Rockwell C25 hardness and 120,000 psi tensile strength meet rigorous Grade 5 requirements. Compliance with RoHS 3 (2015/863/EU) regulations confirms environmental responsibility, making these fasteners suitable for global industrial applications demanding both performance and regulatory adherence.
