S-90268A514 1 3/4"-5 x 5 1/4" Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for extended service life in harsh environments
• Maximum torque application capability through external hex drive design for secure tightening with standard tools
• Reliable thread engagement with fully threaded right-hand UNC coarse threads ensuring consistent connection strength
• Precision thread fit meeting Class 2B specifications for smooth assembly and optimal load distribution
• Heavy-duty connection performance with standard coupling profile designed for demanding industrial applications
• Environmental compliance assurance with RoHS 3 and REACH compliance for safe usage in regulated industries
• Versatile inch system compatibility with 1 3/4"-5 UNC threading for seamless integration with existing equipment

Professional Applications & Engineering Value

This heavy-duty coupling nut delivers exceptional engineering value in applications requiring extended-length threaded connections. The 18-8 stainless steel construction provides excellent corrosion resistance, making it ideal for chemical processing, marine environments, and outdoor installations where moisture exposure is a concern. The fully threaded UNC coarse thread design ensures maximum thread engagement along the entire 5 1/4" length, distributing stress evenly and preventing connection failure under heavy loads. The external hex drive allows for high-torque installation using standard wrenches, while the Class 2B thread fit guarantees smooth assembly without binding. These features combine to solve critical challenges in structural frameworks, machinery assembly, and piping systems where reliable, long-lasting threaded connections are essential for operational safety and reduced maintenance intervals.

Specification Summary & Compliance

This coupling nut features 1 3/4"-5 UNC coarse threads with Class 2B thread fit precision, ensuring dimensional accuracy and reliable performance. The manufacturing complies with standard inch system specifications for coupling nuts with standard profile. The product is RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental safety regulations for hazardous substance restrictions.