S-93345A240 1 1/4"-7 x 3" Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• Exceptional load distribution through fully threaded design that maintains consistent strength across the entire 3" length
• Reliable reverse-thread security with left-hand threading for applications requiring counter-rotational fastening solutions
• Optimized installation efficiency featuring standard external hex drive for easy tool access and secure torque application
• Precision thread engagement with Class 2B thread fit ensuring smooth assembly and reduced risk of cross-threading
• Enhanced mechanical stability from UNC coarse threading that provides superior vibration resistance in heavy-duty applications
• Comprehensive regulatory compliance meeting RoHS 3 and REACH standards for safe use across global industrial markets

Professional Applications & Engineering Value

This 1 1/4"-7 UNC left hand coupling nut delivers critical engineering solutions for demanding mechanical systems requiring reverse-thread fastening capabilities. The zinc-plated steel construction provides essential corrosion protection in industrial environments where exposure to moisture and chemicals is common. With its fully threaded design and coarse UNC threading, this coupling nut offers superior vibration resistance and load distribution across extended connections, making it ideal for hydraulic systems, heavy machinery, and structural applications where left-hand threading prevents unintended loosening from rotational forces. The external hex drive configuration ensures straightforward installation and removal with standard tools, while the substantial 1 5/8" width provides ample surface area for secure tool engagement during high-torque applications.

Specification Summary & Compliance

This coupling nut features Class 2B thread fit per UNC standards, ensuring precise dimensional accuracy and reliable thread engagement. The product maintains 1 1/4"-7 UNC coarse threading with left-hand direction and measures 1 5/8" in width by 3" in length. Manufacturing and material compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to international environmental and safety standards for industrial components.