S-90202A214 5/16"-18 x 1 1/4" ASTM A582 Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Reliable thread engagement ensured by Class 2B thread fit, reducing cross-threading risks
• High-strength performance meeting ASTM A582 standards for demanding mechanical applications
• Quick and easy installation with coarse UNC threading and right-hand direction
• Full-threaded design provides maximum grip length for secure connections
• Environmental compliance with RoHS 3 and REACH regulations for safe usage
• Precise dimensional control with 27/64" OD and 1 1/4" length for consistent fit

Professional Applications & Engineering Value

This 5/16"-18 UNC coupling nut delivers exceptional engineering value in applications requiring extended thread engagement between two male-threaded components. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for chemical processing, marine environments, and outdoor installations where moisture exposure is common. The fully threaded design and Class 2B thread fit ensure smooth assembly and disassembly while maintaining structural integrity under vibration and load stress. Coarse thread spacing allows for rapid installation in time-sensitive maintenance operations, while the right-hand threading follows industry-standard practices for compatibility with existing fastener systems. These coupling nuts are particularly valuable in plumbing systems, machinery assembly, and structural frameworks where reliable, long-lasting connections are critical to operational safety and efficiency.

Specification Summary & Compliance

This coupling nut features 5/16"-18 UNC coarse threads with Class 2B thread fit per standard inch system requirements. Manufacturing complies with ASTM A582 specifications for material quality and performance. The product maintains dimensional accuracy with OD of 27/64" and length of 1 1/4". Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and restricted substance adherence for industrial applications.