S-92198A803 5/8"-11 x 2 1/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments
• Exceptional tensile strength rated at 80,000 psi for heavy-duty applications requiring maximum load-bearing capacity
• Optimized thread engagement with UNC coarse threading and Class 2A fit for faster assembly and secure fastening
• Enhanced durability with Rockwell B70 hardness providing excellent resistance to wear and deformation
• Reliable partial threading design allowing for precise clamping force control in critical connections
• Industry-standard compliance with ASME B18.2.1 specifications ensuring consistent performance and interchangeability
• External hex drive compatibility with standard tools for quick installation and removal in confined spaces

Professional Applications & Engineering Value

This 5/8"-11 UNC hex head screw delivers critical engineering advantages for industrial applications where corrosion resistance and structural integrity are paramount. The 18-8 Stainless Steel composition provides exceptional protection against rust and chemical degradation, making it ideal for marine environments, food processing equipment, and outdoor structures. The coarse thread configuration ensures rapid installation and superior holding power in softer materials or vibration-prone assemblies. With its partially threaded design, engineers can achieve precise clamp load distribution while the external hex drive offers reliable torque transmission for high-tension fastening requirements. These heavy-duty hex bolts solve common industrial challenges including galvanic corrosion, thread stripping, and mechanical failure under extreme loads.

Specification Summary & Compliance

This hex head screw maintains Class 2A thread fit tolerances per UNC standards with precise dimensional accuracy. Manufacturing complies with ASME B18.2.1 specifications for consistent quality and performance. The product meets RoHS 3 (2015/863/EU) compliance for restricted hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. Critical specifications include 2-1/4" length, 1-1/2" minimum thread length, and right-hand thread orientation, ensuring full compatibility with industrial standards and replacement requirements.