S-91034A423 1 1/2"-6 x 4" Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel construction for extended service life in harsh industrial environments
• Exceptional load distribution through full threading and standard profile design for reliable connections under heavy stress
• Quick and secure installation with coarse UNC threading and Class 2B fit ensuring smooth assembly without cross-threading
• High-torque capability with external hex drive design allowing for powerful tightening with standard tools
• Versatile right-hand threading compatible with standard industrial equipment and existing fastener systems
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe, regulated industrial use
• Robust dimensional stability with precise 2" width and 4" length maintaining consistent performance across applications

Professional Applications & Engineering Value

This heavy-duty coupling nut delivers critical engineering solutions where extended-length fastening is required. The black-oxide steel construction provides essential corrosion protection while maintaining high tensile strength, making it ideal for structural applications, machinery assembly, and equipment manufacturing. The fully threaded design with UNC coarse threading ensures maximum thread engagement across the entire 4" length, distributing load evenly to prevent stress concentration points. The Class 2B thread fit guarantees precise mating with corresponding male threads, eliminating play while maintaining smooth assembly. These features combine to create a reliable connecting solution for hydraulic systems, structural frameworks, and industrial machinery where vibration resistance and long-term durability are paramount.

Specification Summary & Compliance

Manufactured to exacting standards with Class 2B thread fit precision and UNC 1 1/2"-6 coarse threading in right-hand direction. The coupling nut features standard profile dimensions of 2" width across flats and 4" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial applications while maintaining superior mechanical properties.