S-90268A414 2-56 x 11/16" Coupling Nuts

Key Features & Benefits at a Glance

• Exceptional Durability: Crafted from corrosion-resistant 18-8 stainless steel to withstand harsh industrial environments and reduce maintenance costs.
• Superior Grip & Torque Application: External hex drive design allows for easy installation with standard tools, ensuring secure fastening in tight spaces.
• Enhanced Thread Engagement: Extra long profile and partial threading provide maximum thread contact for stronger, more reliable connections in extended assemblies.
• Precision Thread Fit: Class 2B thread fit ensures smooth, consistent engagement with mating components, minimizing cross-threading risks.
• Wide Compatibility: 2-56 UNC coarse threading offers excellent vibration resistance and is compatible with a broad range of industrial equipment.
• Regulatory Compliance: Meets RoHS 3 and REACH standards, making it suitable for global supply chains and environmentally sensitive applications.
• Optimized for Inch-System Applications: Designed specifically for imperial measurements, ensuring seamless integration in North American and other inch-based industries.

Professional Applications & Engineering Value

This extra long coupling nut is engineered to solve critical challenges in assembly and maintenance where standard nuts fall short. The 18-8 stainless steel construction provides excellent corrosion resistance, ideal for outdoor, marine, or chemical-exposed settings. Its external hex drive and partial threading enable quick, tool-accessible installation in confined or deep-reach applications, such as machinery frames, hydraulic systems, and structural supports. The 2-56 UNC coarse thread enhances load distribution and resists loosening under vibration, while the extended length allows for connecting longer rods or bolts without compromising strength. This nut delivers reliable performance in industrial fastening scenarios demanding precision, durability, and compliance.

Specification Summary & Compliance

This coupling nut adheres to UNC coarse thread standards with a Class 2B thread fit for consistent dimensional accuracy. Manufactured to inch-system specifications, it features a thread size of 2-56, minimum thread length of 3/16", width of 1/4", and overall length of 11/16". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.