S-90264A275 1 1/4"-12 x 3" Coupling Nuts

Key Features & Benefits at a Glance

• Exceptional tensile strength from zinc-plated steel construction for reliable performance in heavy-duty applications
• Precise Class 2B thread fit ensures smooth assembly and reduces cross-threading risks during installation
• Fully threaded design provides maximum engagement length for superior load distribution
• External hex drive style offers excellent torque transmission and easy installation with standard tools
• Fine thread spacing (12 UNF) delivers enhanced vibration resistance and superior clamping force
• Corrosion-resistant zinc plating extends service life in demanding industrial environments
• Comprehensive compliance with RoHS 3 and REACH regulations for environmental and workplace safety

Professional Applications & Engineering Value

This heavy-duty coupling nut solves critical connection challenges in industrial assembly where extended reach and maximum strength are paramount. The zinc-plated steel construction provides excellent corrosion resistance while maintaining high tensile strength, making it ideal for structural applications, machinery assembly, and equipment manufacturing. The 1 1/4"-12 UNF fine threading with Class 2B fit ensures precise engagement that resists loosening under vibration, a common failure point in dynamic industrial environments. The fully threaded design allows for adjustable connection lengths while the external hex drive facilitates quick installation with standard wrenches, reducing assembly time and labor costs in production settings.

Specification Summary & Compliance

This coupling nut features 1 1/4"-12 UNF fine threads with Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy and reliable performance. The 3" length and 1 5/8" width provide optimal engagement for extended connections. Manufactured from high-strength steel with zinc plating for corrosion protection. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest industrial safety and environmental standards for hazardous substance restrictions.