S-90264A520 9/16"-18 x 2 1/8" Coupling Nuts
Coupling Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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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 tools
- Maximum load distribution achieved with fully threaded 2-1/8" length for enhanced structural integrity
- Wide compatibility with 9/16"-18 UNF right-hand threaded components in various assembly applications
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe industrial usage
- Optimized torque transmission with 13/16" hex width providing secure grip during tightening operations
Professional Applications & Engineering Value
This zinc-plated steel coupling nut delivers critical performance in demanding industrial applications where extended thread engagement is required. The 9/16"-18 UNF fine threading with Class 2B tolerance ensures precise mating with corresponding male threads, minimizing backlash and preventing loosening under vibration. The fully threaded design across the entire 2-1/8" length provides maximum thread contact surface, distributing axial loads evenly and reducing stress concentration points. The external hex drive configuration allows for high-torque installation using standard wrenches, making it ideal for heavy-duty coupling applications in machinery, structural frameworks, and equipment assembly where reliable, long-lasting threaded connections are essential.
Specification Summary & Compliance
Manufactured to UNF thread standards with Class 2B thread fit ensuring precise dimensional accuracy and interchangeability. The coupling nut features right-hand fine threading (18 TPI) with full threading throughout its 2-1/8" length and 13/16" hex width. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety standards for industrial components.
