S-90202A218 5/16"-18 x 2" ASTM A582 Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life.
• Robust and reliable connections ensured by the fully threaded design and coarse UNC thread pattern for quick assembly and high load-bearing capacity.
• Precise and secure thread engagement with Class 2B thread fit, minimizing the risk of cross-threading and ensuring consistent performance.
• Compliance with stringent industry standards (ASTM A582) guarantees material quality, dimensional accuracy, and mechanical properties.
• Environmental regulation adherence with RoHS 3 and REACH compliance, making it suitable for global supply chains and sensitive applications.
• Versatile 2-inch length provides ample threading surface for connecting long rods or studs in various assembly setups.
• Durable right-hand threading offers compatibility with standard components, simplifying maintenance and replacement procedures.

Professional Applications & Engineering Value

This 5/16"-18 UNC coupling nut is engineered to solve critical challenges in industrial assembly, such as connecting threaded rods, studs, or other components under tensile or vibrational loads. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for outdoor, marine, or chemical-exposed environments. Its fully threaded, coarse UNC profile ensures rapid installation and high shear strength, reducing assembly time while maintaining joint integrity. The Class 2B thread fit offers a balance between ease of assembly and precise engagement, preventing loosening in dynamic applications. Commonly used in construction, machinery, and automotive sectors, this coupling nut delivers reliable performance where durability and compliance with ASTM A582 standards are paramount.

Specification Summary & Compliance

This coupling nut adheres to UNC coarse thread standards with a size of 5/16"-18 and features a Class 2B thread fit for consistent dimensional accuracy. It meets the material and manufacturing specifications of ASTM A582. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated industrial markets.