S-90977A235 1 1/8"-7 x 3" Coupling Nuts

Key Features & Benefits at a Glance

• Exceptional tensile strength from Grade 5 steel construction, ensuring reliable performance under high-stress applications
• Superior corrosion resistance with zinc-plated coating, extending service life in harsh industrial environments
• Optimized torque transmission through external hex drive design, allowing secure installation with standard tools
• Precision thread engagement with Class 2B UNC coarse threading, providing consistent mating with male threaded components
• Versatile connection capability through full threading along the entire 3" length, accommodating various joining requirements
• Enhanced durability with right-hand thread direction and coarse thread spacing, resisting vibration-induced loosening
• Regulatory compliance assurance meeting RoHS 3 and REACH standards, ensuring environmental and safety requirements

Professional Applications & Engineering Value

This heavy-duty Grade 5 coupling nut delivers critical engineering solutions for industrial assembly challenges where extended-length fastening is required. The zinc-plated steel construction provides essential corrosion protection for machinery, structural frameworks, and equipment subjected to demanding environmental conditions. The 1 1/8"-7 UNC coarse threading with Class 2B fit ensures precise alignment and secure connections between threaded rods or bolts, eliminating play and maintaining structural integrity. The external hex drive configuration enables high-torque installation without stripping, while the fully threaded design offers flexibility in positioning and adjustment. Ideal for construction, manufacturing, and heavy equipment applications where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

This coupling nut features 1 1/8"-7 UNC coarse threading with Class 2B thread fit for precise dimensional accuracy and reliable mating compatibility. Manufactured from Grade 5 steel with zinc-plated surface treatment, it meets industry standards for heavy-duty fastening applications. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety compliance. Dimensions include 1-1/2" width across flats and 3" length for extended connection capability.