S-90264A235 5/8"-18 x 2 1/8" Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• Precise thread engagement with Class 2B fine threading ensuring reliable, vibration-resistant connections
• Easy installation and removal through external hex drive design compatible with standard wrenches
• Maximum load distribution with fully threaded 2 1/8" length for enhanced structural integrity
• Wide compatibility with 5/8"-18 UNF components, ideal for fine-thread assembly applications
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use
• Dimensional stability with 13/16" width providing secure wrenching surfaces during torque application

Professional Applications & Engineering Value

This heavy-duty coupling nut solves critical alignment and extension challenges in industrial assembly lines, machinery frameworks, and structural supports. The zinc-plated steel material provides essential corrosion protection while maintaining high tensile strength, preventing premature failure in demanding environments. With UNF fine threading and Class 2B thread fit, it delivers superior resistance to vibrational loosening - a common issue in dynamic equipment. The external hex drive configuration enables quick installation using standard tools, reducing assembly time in coupling applications requiring precise rod-to-rod connections or length extensions.

Specification Summary & Compliance

Manufactured to UNF thread standards with 5/8"-18 fine thread spacing and Class 2B thread fit tolerance for precision mating. Dimensions include 13/16" width across flats and 2 1/8" length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and chemical substance restrictions adherence for industrial fastener applications.