S-90104A006 1/4"-28 x 7/8" Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• Precise thread engagement with Class 2B thread fit ensuring reliable connections and reduced cross-threading risks
• Enhanced durability through fully threaded design providing maximum strength across the entire 7/8" length
• Easy installation and removal with external hex drive style allowing standard wrench access
• Industry-standard compatibility with UNF fine threading (1/4"-28) matching common industrial components
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for global supply chain requirements
• Consistent performance with standard coupling nut profile ensuring predictable load distribution

Professional Applications & Engineering Value

This 316 stainless steel coupling nut delivers exceptional value in applications where corrosion resistance and thread reliability are critical. The UNF fine threading (1/4"-28) provides superior vibration resistance compared to coarse threads, making it ideal for precision equipment, automotive assemblies, and marine hardware. The fully threaded design maximizes strength distribution across the entire 7/8" length, preventing stress concentration points that can lead to failure. With Class 2B thread fit precision, engineers benefit from consistent mating with male threads while maintaining easy assembly. The external hex drive accommodates standard wrenching tools, streamlining maintenance in confined spaces. These features combine to solve common industrial challenges including chemical exposure, vibration loosening, and installation efficiency in demanding environments.

Specification Summary & Compliance

This coupling nut maintains Class 2B thread fit tolerance per UNF standards, ensuring precise thread engagement with mating components. The inch system measurement provides 1/4"-28 fine threading with right-hand thread direction. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental compliance for industrial applications. Dimensions include 1/2" width across flats and 7/8" total length with standard coupling nut profile.