S-91286A239 3/8"-16 x 7" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

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-flake coating, extending service life in harsh industrial environments
• Optimized torque transmission through external hex drive design, ensuring secure installation and removal
• Enhanced thread engagement with UNC coarse threading and Class 2A fit, reducing cross-threading risks during assembly
• Reduced weight without compromising strength through partial threading design while maintaining full structural integrity
• Consistent performance assurance meeting ASME B18.2.1 and SAE J429 specifications for quality and reliability
• Environmental compliance readiness with RoHS 3 and REACH compliance for global industrial applications

Professional Applications & Engineering Value

Engineered for heavy-duty industrial fastening, these Grade 8 hex head screws deliver exceptional performance in demanding applications where vibration resistance and structural integrity are paramount. The zinc-flake coated steel construction provides superior corrosion protection, making them ideal for outdoor equipment, machinery frames, and structural assemblies exposed to environmental elements. The 3/8"-16 UNC coarse threading ensures rapid installation and superior resistance to loosening under dynamic loads, while the partial threading design optimizes clamping force distribution. With Rockwell C33 hardness and 150,000 psi tensile strength, these fasteners prevent stripping and deformation under extreme tension, solving critical failure points in construction, manufacturing, and heavy equipment applications where reliability cannot be compromised.

Specification Summary & Compliance

This 7-inch hex head screw features precise Class 2A thread fit with 3/8"-16 UNC coarse threading and partial threading configuration. Manufactured to ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical performance. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting international standards for industrial use while maintaining the high-strength characteristics required for critical fastening applications.