S-90654A346 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
- Exceptional tensile strength with ASTM Grade 2H certification ensures reliable performance under high-stress conditions
- Full-length threading provides maximum engagement and superior load distribution across connected components
- Coarse UNC thread profile with Class 2B fit enables quick assembly and reduces cross-threading risks
- External hex drive design offers excellent torque transmission for secure installation with standard tools
- Heavy-duty steel construction delivers outstanding durability and corrosion resistance for industrial environments
- RoHS 3 and REACH compliance guarantees environmental safety and regulatory acceptance in global markets
- Generous 3-inch length accommodates extended connections while maintaining structural integrity
Professional Applications & Engineering Value
This 1 1/4"-7 UNC coupling nut delivers critical engineering solutions for heavy-duty industrial applications requiring extended-length connections. The ASTM Grade 2H steel construction provides exceptional proof load capacity, making it ideal for structural frameworks, machinery assembly, and construction projects where vibration resistance is paramount. The fully threaded design ensures maximum thread engagement throughout the entire 3-inch length, distributing stress evenly to prevent point failures. With coarse threading and Class 2B thread fit, installation becomes significantly faster while maintaining precision alignment in high-volume production environments. The external hex drive accommodates standard wrenches for secure tightening in confined spaces, solving accessibility challenges common in complex assemblies.
Specification Summary & Compliance
This coupling nut features 1 1/4"-7 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and reliable mating compatibility. Manufactured from ASTM Grade 2H steel for certified high-strength performance, the fastener meets rigorous industrial requirements. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and material safety for global supply chain integration.
