S-90465A215 5/16"-18 x 7/8" Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass construction, ensuring long-term reliability in harsh industrial environments
• Secure and precise connections with Class 2B thread fit, providing consistent engagement and reduced risk of cross-threading
• Quick and easy installation through external hex drive design, allowing standard wrench access in confined spaces
• Enhanced load distribution with full threading along the entire 7/8" length, minimizing stress concentration points
• Wide compatibility with 5/16"-18 UNC coarse thread components, making it ideal for various industrial assembly applications
• Environmental compliance assurance meeting RoHS 3 and REACH standards, supporting sustainable manufacturing practices
• Durable mechanical performance with standard coupling nut profile, maintaining integrity under vibration and thermal cycling

Professional Applications & Engineering Value

This 5/16"-18 UNC brass coupling nut delivers exceptional engineering value in applications requiring reliable threaded connections with corrosion resistance. The Class 2B thread fit ensures precise mating with male threads while the fully threaded design provides maximum engagement length for superior tensile strength. Manufactured from corrosion-resistant brass material, it solves critical challenges in plumbing, electrical, and marine industries where moisture and chemical exposure degrade ordinary fasteners. The external hex drive configuration enables efficient installation in tight spaces using standard tools, reducing assembly time while maintaining right-hand coarse threading compatibility with common UNC components. Ideal for extending threaded rods, joining hydraulic fittings, and securing instrumentation, this coupling nut maintains performance in demanding environments while meeting stringent RoHS and REACH compliance requirements.

Specification Summary & Compliance

This coupling nut features 5/16"-18 UNC coarse threading with Class 2B thread fit per ASME B1.1 standards, ensuring dimensional accuracy and interchangeability. The 7/8" length and 1/2" width provide optimal strength-to-weight ratio for industrial applications. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming absence of restricted substances. The right-hand threaded, fully threaded design with external hex drive follows industry-standard specifications for reliable performance in mechanical systems.