S-92620A601 5/16"-18 x 6" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with Grade 8 strength rating and 150,000 psi tensile strength for critical structural applications
• Superior corrosion protection through zinc yellow-chromate plating that withstands harsh industrial environments
• Precise thread engagement with Class 2A UNC coarse threads ensuring reliable installation and vibration resistance
• Optimized torque transmission via external hex drive design that prevents tool slippage during high-torque applications
• Full-length threading provides consistent holding power along the entire 6" shaft length
• Enhanced durability with Rockwell C33 hardness maintaining fastener integrity under repeated stress
• Industry compliance meeting ASME B18.2.1 and SAE J429 specifications for quality assurance

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance in construction, machinery assembly, and structural framing where high tensile strength is paramount. The steel construction with zinc yellow-chromate plating provides superior corrosion resistance in demanding environments, while the UNC coarse threading ensures rapid installation and reliable grip in various materials. The external hex drive design allows for high-torque application without cam-out, making these fully threaded fasteners ideal for applications requiring consistent clamping force along the entire shaft length. These industrial hex screws solve critical fastening challenges where vibration resistance, structural integrity, and long-term reliability are essential.

Specification Summary & Compliance

This 5/16"-18 x 6" hex head screw features Class 2A thread fit per UNC standards with coarse thread spacing for optimal performance. Manufactured to meet ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical properties. The fastener maintains Grade 8 strength classification with verified 150,000 psi tensile strength and Rockwell C33 hardness. Compliance with industry standards guarantees consistent quality and performance for professional applications requiring reliable heavy-duty fastening solutions.