S-92240A786 5/8"-11 x 4 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional tensile strength rated at 80,000 psi for reliable performance in heavy-duty applications
• Optimized thread engagement with UNC coarse spacing and Class 2A fit for secure fastening and vibration resistance
• Full threading design provides maximum grip length and uniform stress distribution across the entire bolt
• External hex drive compatibility with standard 15/16" wrench size for easy installation and removal
• Certified material hardness at Rockwell B70 ensures excellent wear resistance and durability
• Comprehensive regulatory compliance meeting ASME B18.2.1, RoHS 3, and REACH standards

Professional Applications & Engineering Value

This 5/8"-11 UNC hex head screw delivers exceptional engineering value for demanding industrial applications where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel composition provides excellent protection against rust and chemical exposure, making it ideal for marine equipment, food processing machinery, and outdoor structural applications. The fully threaded design with coarse UNC spacing ensures rapid installation and superior holding power in various materials, while the external hex drive facilitates high-torque applications without stripping. With its 80,000 psi tensile strength and Rockwell B70 hardness, this fastener maintains structural integrity under extreme loads and vibration, solving critical challenges in heavy machinery assembly, construction frameworks, and industrial equipment maintenance where reliability cannot be compromised.

Specification Summary & Compliance

This 4 1/2" hex head screw features precise Class 2A thread fit tolerances with 5/8"-11 UNC coarse threading and right-hand thread direction. Manufactured to exacting ASME B18.2.1 specifications, it ensures dimensional accuracy and interchangeability. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and material transparency. The combination of 80,000 psi tensile strength and Rockwell B70 hardness guarantees mechanical performance that meets or exceeds industrial requirements for structural fastening applications.