S-91034A422 1 1/4"-7 x 3" Coupling Nuts

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black-oxide steel finish provides superior protection against rust and wear in harsh industrial environments.
• Superior Thread Engagement: Fully threaded design and Class 2B thread fit ensure reliable, vibration-resistant connections for long-term stability.
• High-Torque Installation Capability: External hex drive allows for easy application of high torque with standard tools, reducing assembly time.
• Robust Load Distribution: Coarse UNC threading and 3" length offer increased strength and better stress distribution in heavy-duty applications.
• Wide Compatibility: Standard 1 1/4"-7 UNC thread size and right-hand direction ensure seamless integration with existing industrial components.
• Regulatory Compliance Assurance: Meets RoHS 3 and REACH standards, guaranteeing safe, environmentally responsible use in global markets.
• Optimized Grip & Handling: 1 5/8" width provides a secure grip during installation, minimizing slippage and improving worker safety.

Professional Applications & Engineering Value

This heavy-duty coupling nut is engineered to solve critical connection challenges in demanding sectors like construction, machinery assembly, and infrastructure projects. The black-oxide steel material resists corrosion, extending service life in outdoor or high-moisture settings. Its fully threaded UNC coarse design and Class 2B thread fit deliver consistent clamping force, preventing loosening under dynamic loads. The external hex drive simplifies installation in tight spaces, reducing labor costs. Ideal for joining long rods or shafts, this nut ensures reliable performance in structural frameworks, conveyor systems, and heavy equipment where vibration resistance and durability are paramount.

Specification Summary & Compliance

This coupling nut adheres to UNC coarse thread standards with a precise Class 2B thread fit for consistent dimensional accuracy. It features a right-hand thread direction, standard profile, and measures 3" in length with 1 5/8" width. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for industrial applications worldwide.