S-92620A540 1/4"-20 x 3/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 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 150,000 psi tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in demanding environments
- Optimized thread engagement through UNC coarse threading with Class 2A fit, ensuring secure fastening and vibration resistance
- Enhanced durability from Rockwell C33 hardness, maintaining structural integrity under repeated stress
- Maximum thread utilization with fully threaded design for consistent clamping force along the entire fastener length
- Industry-standard compatibility meeting ASME B18.2.1 and SAE J429 specifications for reliable interchangeability
- Environmental compliance assurance with RoHS 3 and REACH compliance for global manufacturing applications
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical engineering solutions for heavy-duty industrial applications where failure is not an option. The combination of high-strength steel and zinc yellow-chromate plating addresses common challenges in machinery, construction, and automotive assemblies by providing exceptional corrosion resistance while maintaining 150,000 psi tensile strength. The UNC coarse threading with Class 2A fit ensures rapid installation and reliable performance in vibration-prone environments, while the external hex drive design allows for high-torque application without stripping. These fully threaded industrial fasteners are engineered to withstand extreme conditions while meeting rigorous industry standards for precision and reliability.
Specification Summary & Compliance
This 1/4"-20 x 3/4" hex head screw features precise Class 2A thread fit tolerances and UNC coarse threading manufactured to exacting standards. The fastener complies with ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, making these screws suitable for regulated industries and international markets.
