S-90268A451 3/4"-16 x 4" Coupling Nuts

Key Features & Benefits at a Glance

• Enhanced connection strength with a 4" extra long profile for maximum thread engagement in demanding applications
• Superior corrosion resistance provided by 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise thread alignment with 3/4"-16 UNF fine threading and Class 2B fit for reliable, vibration-resistant connections
• Easy installation and removal using standard tools thanks to the external hex drive design
• Versatile partial threading allowing flexibility in assembly while maintaining 3/4" minimum thread engagement
• Environmental compliance assurance with RoHS 3 and REACH compliance for global industrial use
• Right-hand thread direction ensuring compatibility with standard industrial equipment and fastening systems

Professional Applications & Engineering Value

This extra long coupling nut solves critical connection challenges in industrial assemblies where standard nuts fall short. The 4" length provides exceptional thread engagement capacity, making it ideal for connecting long threaded rods, extending shaft assemblies, or joining components with significant gap distances. The 18-8 stainless steel material offers excellent corrosion resistance in demanding environments including chemical processing, marine applications, and outdoor installations. The 3/4"-16 UNF fine threading with Class 2B thread fit ensures precise mating with male threads, reducing the risk of cross-threading while providing superior vibration resistance in machinery and structural applications. The partially threaded design allows for optimal positioning flexibility while maintaining maximum connection integrity where it matters most.

Specification Summary & Compliance

This coupling nut features 3/4"-16 UNF fine threading with Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy and reliable performance. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making it suitable for global industrial applications. With a minimum thread length of 3/4", width of 1-1/8", and total length of 4", this extra long coupling nut meets rigorous industrial specifications for heavy-duty connecting applications.