S-90268A417 5/16"-24 x 3" Coupling Nuts

Key Features & Benefits at a Glance

• Extended 3" length provides superior thread engagement for connecting long rods or shafts in demanding applications
• Corrosion-resistant 18-8 stainless steel construction ensures long-term durability in harsh industrial environments
• Class 2B thread fit guarantees precise, reliable mating with male threaded components
• 5/16"-24 UNF fine threading delivers enhanced vibration resistance compared to coarse thread alternatives
• External hex drive design enables easy installation and removal with standard wrench tools
• Partial threading configuration optimizes strength while reducing material usage and weight
• Full regulatory compliance with RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This extra long coupling nut solves critical connection challenges in industrial assembly where standard nuts cannot bridge extended gaps between threaded components. The 18-8 stainless steel material provides exceptional corrosion resistance, making it ideal for applications exposed to moisture, chemicals, or outdoor elements. The 5/16"-24 UNF fine thread configuration offers superior vibration resistance in machinery, automotive, and aerospace applications where loosening under dynamic loads is a concern. The 3" length and Class 2B thread fit ensure secure, precise connections in hydraulic systems, drive shafts, and structural frameworks where alignment accuracy is paramount. This partially threaded coupling nut delivers maximum strength with minimal weight penalty, while the external hex drive facilitates quick installation in confined spaces.

Specification Summary & Compliance

This coupling nut features 5/16"-24 UNF fine threading with Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy and reliable performance. The partial threading extends to a minimum of 5/8" with overall dimensions of 5/8" width and 3" length. Manufactured from 18-8 stainless steel with external hex drive and right-hand thread direction. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.