S-90465A325 5/8"-18 x 2 1/8" Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction for long-lasting performance in harsh industrial environments
• Precise thread engagement with Class 2B fit ensuring reliable connections and reduced vibration loosening
• Easy installation and removal through external hex drive design compatible with standard tools
• Full thread coverage along the 2-1/8" length provides maximum grip strength for extended rod connections
• Fine UNF threading (5/8"-18) delivers higher torque capacity and better vibration resistance compared to coarse threads
• Environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Standard coupling profile ensures compatibility with existing UNF threaded components and systems

Professional Applications & Engineering Value

This brass coupling nut solves critical connection challenges in industrial applications where corrosion resistance and thread reliability are paramount. The UNF fine threading (5/8"-18) provides superior vibration resistance in machinery, automotive, and marine applications, while the fully threaded design ensures maximum engagement strength for joining long rods or shafts. The external hex drive allows for quick installation with standard wrenches, reducing assembly time in production environments. Made from durable brass, this coupling nut maintains integrity in humid, chemical, or saltwater conditions where steel components would corrode, making it ideal for plumbing, hydraulic systems, and electrical enclosures requiring reliable, long-term connections.

Specification Summary & Compliance

This coupling nut features 5/8"-18 UNF fine threading with Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy and compatibility. The 2-1/8" length and 13/16" width provide optimal strength for extended connections. Manufacturing complies with RoHS 3 (2015/863/EU) with exemption 6(c) for lead in copper alloys and REACH (EC 1907/2006) compliance for 233 SVHC substances, meeting international environmental and safety standards for industrial components.