S-90268A441 5/8"-11 x 6" Coupling Nuts

Key Features & Benefits at a Glance

• Extended reach capability with a 6" extra long profile for connecting threaded rods or studs over greater distances in complex assemblies.
• Superior corrosion resistance provided by 18-8 Stainless Steel material, ensuring long-term reliability in harsh or outdoor environments.
• Robust coarse threading with 5/8"-11 UNC and Class 2B fit for faster assembly and reliable engagement, reducing the risk of cross-threading.
• Optimized thread engagement through partial threading with a 15/16" minimum thread length, balancing strength with material efficiency.
• Secure external hex drive design allows for high-torque installation using standard wrenches, ensuring a tight and stable connection.
• Compliance with major environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications.
• Heavy-duty construction with a 7/8" width, providing a larger wrenching surface and enhanced mechanical strength for demanding loads.

Professional Applications & Engineering Value

This extra long coupling nut is engineered to solve critical challenges in industrial fastening, such as bridging gaps between components or extending threaded sections where standard nuts fall short. The use of 18-8 Stainless Steel ensures excellent resistance to rust and corrosion, which is vital in applications exposed to moisture, chemicals, or varying temperatures, including construction, machinery, and marine equipment. The 5/8"-11 UNC coarse thread and Class 2B thread fit provide a reliable, easy-to-assemble connection that minimizes the risk of stripping, while the partially threaded design concentrates material where it's needed most, reducing weight without compromising strength. Ideal for use in structural frameworks, piping systems, and heavy-duty assemblies, this nut delivers consistent performance and durability, helping to reduce maintenance costs and downtime in professional settings.

Specification Summary & Compliance

This coupling nut adheres to precise dimensional standards, including a Class 2B thread fit for consistent engagement and UNC coarse threading (5/8"-11) per industry norms. Key specifications include a minimum thread length of 15/16", width of 7/8", and overall length of 6". The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated industrial and international markets.