S-90202A216 5/16"-18 x 1 1/2" ASTM A582 Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Exceptional tensile strength meeting ASTM A582 standards for reliable load-bearing in demanding applications
• Precision Class 2B thread fit ensures smooth engagement and secure connections without cross-threading
• Full threading design provides maximum grip length and uniform stress distribution across the entire nut
• Right-hand coarse UNC threading enables quick installation and removal while maintaining vibration resistance
• Environmental compliance with RoHS 3 and REACH regulations for safe use across global industrial markets
• Standard coupling nut profile offers universal compatibility with existing 5/16"-18 UNC threaded components

Professional Applications & Engineering Value

This 5/16"-18 UNC coupling nut delivers critical engineering solutions for extending threaded rods, joining dissimilar materials, and creating adjustable assemblies in mechanical systems. The 18-8 stainless steel composition provides inherent corrosion resistance that eliminates galvanic issues when connecting different metals, while the fully threaded design maximizes engagement surface area to prevent loosening under dynamic loads. With its coarse UNC threading and Class 2B fit, this coupling nut maintains precise alignment in high-vibration environments common in industrial machinery, construction frameworks, and transportation equipment. The ASTM A582 compliance ensures consistent mechanical properties batch-to-batch, giving engineers confidence in predictable performance across production runs.

Specification Summary & Compliance

This coupling nut features 5/16"-18 UNC coarse threading with Class 2B thread fit per ASME B1.1 standards, ensuring proper clearance for reliable assembly. The 1-1/2" length and 27/64" OD provide optimal strength-to-weight ratio for extended connections. Manufacturing follows ASTM A582 specifications for material consistency and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making this component suitable for global industrial applications requiring restricted substance control.