S-90268A512 1 1/4"-7 x 3" Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional tensile strength and durability for heavy-duty connections, ensuring long-term reliability in demanding assemblies.
• Easy installation and removal thanks to the external hex drive design, allowing for standard wrench tool compatibility.
• Precise thread engagement with Class 2B thread fit, providing consistent performance and reducing cross-threading risks.
• Optimized for high-vibration applications through coarse UNC threading, maintaining secure connections under dynamic loads.
• Full-length threading offers maximum adjustability and flexibility when joining two threaded rods or studs.
• Environmentally compliant manufacturing meeting RoHS 3 and REACH standards, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This 1 1/4"-7 UNC coupling nut delivers critical performance in structural and mechanical assemblies where extended length and robust material properties are essential. The 18-8 stainless steel provides excellent resistance to rust and chemical exposure, making it suitable for marine, chemical processing, and construction applications. Its coarse thread design and Class 2B thread fit ensure rapid assembly and reliable clamping force, reducing installation time while preventing loosening under vibration. The 3" length and fully threaded body accommodate long stud connections or spacing requirements, offering engineers a versatile solution for frame building, machinery, and piping systems. With external hex drive, it supports high-torque installation without stripping, enhancing productivity in maintenance and OEM operations.

Specification Summary & Compliance

This coupling nut adheres to UNC coarse thread standards with a Class 2B thread fit for consistent dimensional accuracy. It is manufactured from 18-8 stainless steel and features a standard profile with right-hand threading. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it meets international safety and sustainability requirements for industrial components.