S-90002A121 1/2"-13 x 1" ASME B18.2.1, SAE J429 High-Strength Steel Hex Head Screws with Material Certification
High-Strength Steel Hex Head Screws with Material Certification
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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 150,000 PSI tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance through zinc yellow-chromate plating that extends service life in harsh environments
- Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring secure fastening and vibration resistance
- Maximum torque transmission via the external hex drive design that prevents tool slippage during installation
- Enhanced durability from Rockwell C33 hardness that maintains structural integrity under repeated stress
- Full-threaded design providing consistent clamping force along the entire 1" length for uniform load distribution
- Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed interchangeability
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical performance advantages for heavy-duty industrial applications where failure is not an option. The combination of high-strength steel construction and zinc yellow-chromate plating addresses two primary engineering concerns: structural integrity under extreme loads and long-term corrosion protection in challenging environments. The UNC coarse thread pattern with Class 2A thread fit ensures rapid installation while maintaining precise tolerances, reducing assembly time without compromising joint security. Particularly valuable in construction equipment, automotive assemblies, and machinery manufacturing, these fully threaded fasteners provide uniform stress distribution across the entire engagement length, preventing localized stress concentrations that can lead to premature failure.
Specification Summary & Compliance
Manufactured to exacting standards with Class 2A thread fit tolerances and UNC coarse thread specifications (1/2"-13). These hex head screws comply with ASME B18.2.1 and SAE J429 standards, ensuring dimensional accuracy and mechanical properties. The zinc yellow-chromate plating provides RoHS and REACH compliant corrosion protection while maintaining the 150,000 PSI tensile strength and Rockwell C33 hardness required for Grade 8 classification.
