S-90977A263 1 1/4"-7 x 3" 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 hot-dipped galvanized steel construction for extended service life in harsh environments
- Exceptional load-bearing capacity with Grade 5 strength rating for heavy-duty applications
- Reliable thread engagement with Class 2B thread fit ensuring smooth assembly and vibration resistance
- Versatile connectivity with 3" fully threaded design allowing for extended rod/bolt connections
- Easy installation with external hex drive providing secure tool grip and torque application
- Industry-standard compatibility with 1 1/4"-7 UNC coarse threads matching common industrial components
- Regulatory compliance meeting RoHS 3 and REACH standards for safe industrial usage
Professional Applications & Engineering Value
This Grade 5 coupling nut delivers critical performance in structural and mechanical systems where extended threaded connections are required. The hot-dipped galvanized steel construction provides exceptional corrosion resistance for outdoor infrastructure, marine environments, and industrial settings where moisture exposure is a concern. The fully threaded 1 1/4"-7 UNC design with Class 2B thread fit ensures precise engagement with mating components, preventing loosening under vibration while maintaining alignment in long-span applications. The external hex drive facilitates straightforward installation with standard tools, making it ideal for construction projects, machinery assembly, and pipeline systems requiring reliable, high-strength couplings that withstand demanding operational conditions.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2B thread fit tolerance for consistent performance. Complies with UNC coarse thread specifications (1 1/4"-7) and meets Grade 5 strength requirements. Certified RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant for environmental and safety regulations. Standard coupling nut profile with right-hand threading ensures industry-wide compatibility across industrial fastener systems.
