S-93525A289 1/4"-28 x 3/4" Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• Precise thread engagement with Class 2B fit UNF fine threads ensuring reliable, vibration-resistant connections
• Easy installation and removal through standard external hex drive design compatible with common wrench tools
• Enhanced load distribution with fully threaded design providing consistent strength across the entire coupling length
• Reliable performance meeting Grade 2 strength requirements for medium-duty industrial applications
• Quick visual inspection capability through 3/32" sight hole for verifying proper thread engagement
• Global compliance assurance with REACH and RoHS 3 certifications for international industrial projects

Professional Applications & Engineering Value

This Grade 2 zinc-plated steel coupling nut delivers exceptional engineering value in applications requiring extended threaded rod connections or spacer functionality. The 1/4"-28 UNF fine thread configuration provides superior resistance to vibration loosening compared to coarse threads, making it ideal for machinery, automotive assemblies, and precision equipment where maintaining torque integrity is critical. The fully threaded design ensures maximum thread contact area, distributing loads evenly to prevent stress concentration. The zinc plating creates a sacrificial barrier against corrosion, significantly extending service life in environments exposed to moisture or chemicals. With its standard external hex drive, installation and maintenance are streamlined using common tools, reducing assembly time and labor costs in industrial settings.

Specification Summary & Compliance

This coupling nut maintains Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy and reliable performance. Manufactured to Grade 2 strength specifications, it delivers consistent mechanical properties for industrial fastening requirements. The product is fully compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, meeting international environmental and safety standards. Dimensions include 3/4" length and 3/8" width with standard coupling nut profile, providing optimal compatibility with matching threaded components in various industrial assemblies.