S-90268A416 1/4"-28 x 6" Coupling Nuts

Key Features & Benefits at a Glance

• Extended reach capability with 6" extra long profile for connecting widely spaced threaded rods or studs
• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and outdoor applications
• Precise thread engagement with Class 2B UNF fine threading ensuring reliable, vibration-resistant connections
• Enhanced installation efficiency through external hex drive design for standard wrench compatibility
• Optimized weight distribution with partial threading design reducing material usage while maintaining structural integrity
• Environmental compliance assurance meeting RoHS 3 and REACH standards for regulated industrial applications
• Durable performance combining stainless steel material with fine thread precision for long-term reliability

Professional Applications & Engineering Value

This extra long coupling nut addresses critical challenges in industrial assembly where standard fasteners fall short. The 6" length provides essential reach for connecting threaded components across gaps in structural frameworks, machinery alignment systems, and extended rod assemblies. Manufactured from 18-8 stainless steel, it delivers exceptional corrosion resistance that withstands chemical exposure, moisture, and temperature variations common in manufacturing, marine, and construction environments. The UNF fine threading with Class 2B tolerance ensures superior vibration resistance and load distribution, preventing loosening in high-stress applications. The external hex drive facilitates quick installation with standard tools, while the partial threading optimizes material efficiency without compromising strength. These engineering features make it ideal for precision applications requiring extended reach, environmental durability, and reliable performance under continuous operational stress.

Specification Summary & Compliance

This coupling nut features 1/4"-28 UNF fine threading with Class 2B thread fit tolerance, ensuring precise engagement and reliable performance. The partially threaded design with 5/8" minimum thread length provides optimal connection strength while maintaining efficiency. Manufactured to UNF thread standards with external hex drive (1/2" width) for standard tool compatibility. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest substance restriction requirements for industrial applications worldwide.