S-91286A623 3/8"-16 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 capability with 150,000 psi tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance provided by zinc-flake coating, extending service life in harsh industrial environments
- Optimized installation efficiency through external hex drive design that prevents tool slippage and ensures secure fastening
- Enhanced thread engagement with Class 2A thread fit and coarse UNC threading for quick assembly and vibration resistance
- Maximum material strength achieved through Rockwell C33 hardness and Grade 8 certification for demanding applications
- Full-length threading ensures consistent clamping force distribution along the entire 3/4" length
- Regulatory compliance assurance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards for quality and safety
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 zinc-flake coated steel construction provides exceptional corrosion protection in demanding environments such as manufacturing equipment, structural assemblies, and automotive systems. The 3/8"-16 UNC coarse threading combined with Class 2A thread fit ensures rapid installation and reliable performance in high-vibration settings. With 150,000 psi tensile strength and Rockwell C33 hardness, these fully threaded hex bolts maintain integrity under extreme loads, preventing costly downtime and equipment failure in critical operations.
Specification Summary & Compliance
This 3/8"-16 UNC hex head screw features precise Class 2A thread fit with coarse thread spacing and right-hand threading. Manufactured to ASME B18.2.1 and SAE J429 specifications, the fastener maintains dimensional accuracy and performance standards. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and material restrictions adherence for industrial use.
