S-94252A716 5/8"-18 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and reducing maintenance costs
• Superior load distribution due to the extra wide profile, minimizing surface pressure and preventing material damage
• High tensile strength meeting ASTM Grade 8 requirements, ensuring reliable performance in heavy-duty and high-vibration applications
• Precise, secure fastening with Class 2B thread fit, providing consistent engagement and reducing the risk of loosening
• Broad industry compliance with ASTM A194 specifications, guaranteeing material quality and manufacturing consistency
• Environmental safety assurance with RoHS 3 compliance, making it suitable for regulated industries and global supply chains
• Optimized for fine-thread applications with 5/8"-18 UNF threading, offering improved adjustment precision and vibration resistance

Professional Applications & Engineering Value

This ASTM Grade 8 extra wide hex nut is engineered to solve critical challenges in demanding industrial settings. The 18-8 stainless steel composition provides excellent resistance to oxidation and chemical exposure, making it ideal for marine, chemical processing, and outdoor infrastructure applications where corrosion resistance is paramount. The extra wide hex profile significantly increases bearing surface area, distributing clamp load more effectively to prevent joint failure in high-stress assemblies. With its UNF fine thread design and Class 2B thread fit, this heavy-duty fastener maintains precise tension control in vibration-prone equipment, machinery, and structural connections, reducing maintenance intervals and enhancing operational safety. The combination of ASTM A194 compliance and heavy-duty construction ensures reliable performance in critical applications across energy, construction, and manufacturing sectors.

Specification Summary & Compliance

This hex nut features precision 5/8"-18 UNF fine threads with Class 2B thread fit tolerances, ensuring consistent mating with corresponding male threads. Manufacturing and material quality adhere to ASTM A194 specifications with ASTM Grade 8 strength classification. The product is fully RoHS 3 (2015/863/EU) compliant, containing no restricted hazardous substances. Dimensions include 1-1/16" width and 39/64" height, providing the specified extra wide profile for enhanced load distribution. Thread direction is right-hand, conforming to standard industrial practice.