S-90977A245 1 1/2"-6 x 3 1/2" Coupling Nuts

Key Features & Benefits at a Glance

• Exceptional tensile strength with Grade 5 rating for reliable performance in high-stress applications
• Superior corrosion resistance from zinc-plated steel construction, extending service life in harsh environments
• Optimized load distribution through fully threaded design, ensuring secure connections across extended lengths
• Quick installation compatibility with standard external hex drive, accommodating common wrench tools
• Precise thread engagement with Class 2B UNC coarse threading, reducing cross-threading risks during assembly
• Robust dimensional stability with 2" width and 3½" length, maintaining structural integrity under heavy loads
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe industrial usage

Professional Applications & Engineering Value

This Grade 5 coupling nut delivers critical engineering solutions for heavy-duty fastening scenarios where extended thread engagement is required. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, construction machinery, and structural assemblies exposed to environmental elements. The UNC coarse threading (1½"-6) with Class 2B fit ensures rapid assembly while maintaining vibration resistance, particularly valuable in piping systems, frame connections, and mechanical linkages. The fully threaded design across the 3½" length accommodates variable connection depths, offering flexibility in coupling applications where standard nuts cannot reach. The external hex drive profile enables high-torque installation using common tools, streamlining maintenance and assembly processes in demanding industrial environments.

Specification Summary & Compliance

This coupling nut maintains Class 2B thread fit per UNC standards, ensuring precise dimensional accuracy for consistent performance. Manufactured to Grade 5 strength specifications with zinc-plated steel construction, the fastener delivers reliable mechanical properties across industrial applications. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety standards for industrial components. Thread specifications adhere to 1½"-6 UNC coarse threading with right-hand direction, while the standard coupling nut profile ensures compatibility with existing industrial fastener systems.