S-90268A411 0-80 x 5/8" Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Extended reach capability due to extra-long profile, ideal for connecting threaded rods or studs over greater distances
• Precise thread engagement with Class 2B fine UNF threading ensuring reliable, vibration-resistant connections
• Optimized torque transmission through external hex drive design for secure installation with standard tools
• Reduced weight and material usage with partially threaded design while maintaining full functional thread length
• Global compliance assurance meeting RoHS 3 and REACH environmental standards for international projects
• Right-hand thread compatibility with standard UNF 0-80 fasteners for seamless integration into existing assemblies

Professional Applications & Engineering Value

This 0-80 UNF coupling nut delivers exceptional engineering value in applications requiring extended connections between threaded components. The 18-8 stainless steel construction provides excellent corrosion resistance, making it ideal for marine, chemical processing, and outdoor equipment where environmental factors threaten fastener integrity. The extra-long coupling nut profile solves critical spacing challenges in assemblies where standard nuts cannot bridge the gap between mating threads. With Class 2B thread fit and UNF fine threading, this partially threaded design maintains precise alignment while reducing overall weight - particularly valuable in aerospace, precision instrumentation, and automotive applications where both reliability and weight optimization are paramount. The external hex drive ensures straightforward installation in confined spaces, delivering consistent clamping force without specialized tools.

Specification Summary & Compliance

This coupling nut features 0-80 UNF fine threading with Class 2B thread fit per Unified National Fine standards, ensuring precise dimensional accuracy and reliable engagement. The partial threading design maintains a minimum thread length of 3/16" while the external dimensions measure 1/4" width and 5/8" length. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental compliance for global industrial applications. Right-hand thread direction provides standard compatibility across inch-system fastener assemblies.