S-91034A140 1"-8 x 2 1/2" Coupling Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating, extending service life in demanding industrial environments
• Superior load distribution through fully threaded design, minimizing stress concentration for more reliable connections
• Quick and secure installation with coarse UNC threads and Class 2B fit, reducing assembly time while maintaining precision
• High torque capability via external hex drive, allowing for firm tightening with standard tools
• Versatile coupling performance with standard profile and right-hand threading, compatible with various industrial components
• Regulatory compliance assurance meeting RoHS 3 and REACH standards, ensuring safe use in regulated applications
• Robust dimensional stability with 1"-8 thread size and 2 1/2" length, providing consistent performance under heavy loads

Professional Applications & Engineering Value

This black-oxide steel coupling nut delivers exceptional engineering value in applications requiring extended thread engagement and reliable coupling between threaded rods or components. The 1"-8 UNC coarse thread configuration enables rapid assembly while maintaining structural integrity, significantly reducing installation time in production environments. The fully threaded design distributes mechanical stress evenly across the entire length, preventing localized failure points that commonly occur with partially threaded alternatives. The external hex drive accommodates standard wrenching tools, facilitating secure tightening in confined spaces common to industrial machinery, construction frameworks, and heavy equipment manufacturing. The black-oxide surface treatment provides essential corrosion protection in environments exposed to moisture, chemicals, or outdoor conditions, while maintaining the steel's inherent strength characteristics.

Specification Summary & Compliance

This coupling nut features Class 2B thread fit per UNC standards, ensuring precise dimensional accuracy and reliable mating with corresponding threaded components. Manufactured to UNC coarse thread specifications with 1"-8 thread size and right-hand threading direction. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial fastener applications. The standard coupling nut profile measures 1 5/8" in width and 2 1/2" in length, providing consistent performance across demanding mechanical applications.