S-90264A250 7/8"-9 x 2 1/2" Coupling Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Superior load distribution through full-length threading that maximizes engagement and connection stability
• Quick assembly efficiency with coarse UNC threading and Class 2B fit enabling faster installation while maintaining precision
• Robust torque handling via external hex drive design that provides secure tool grip for high-tension applications
• Reliable standardization with standard coupling nut profile ensuring compatibility with existing inch-system components
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe global industrial usage
• Versatile bridging capability with 2½" length accommodating various rod and stud connection requirements

Professional Applications & Engineering Value

This heavy-duty coupling nut delivers critical performance where extended fastening solutions are required. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, structural frameworks, and machinery subjected to environmental exposure. The fully threaded design with 7/8"-9 UNC coarse threading ensures maximum thread engagement throughout the entire 2½" length, distributing tensile loads evenly to prevent stress concentration. This makes it ideal for connecting threaded rods in construction scaffolding, joining hydraulic components in fluid systems, and assembling conveyor systems in manufacturing facilities. The external hex drive facilitates high-torque installation while the Class 2B thread fit maintains consistent engagement without binding, reducing installation time and improving maintenance efficiency in industrial settings.

Specification Summary & Compliance

This coupling nut features 7/8"-9 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and interchangeability. The standard coupling nut profile measures 1¼" across flats and 2½" in length. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental safety standards for industrial components.