S-90268A223 1/2"-13 x 4" Coupling Nuts

Key Features & Benefits at a Glance

• Extended 4" length provides superior thread engagement for connecting long rods or studs in structural applications
• Corrosion-resistant 18-8 stainless steel construction ensures long-term durability in harsh industrial environments
• UNC coarse threading with Class 2B fit delivers reliable, vibration-resistant connections with easy assembly
• External hex drive design enables secure installation using standard wrenches for maintenance efficiency
• Partial threading configuration offers flexibility for precise positioning in complex assembly setups
• RoHS 3 and REACH compliance guarantees environmental safety and regulatory acceptance for global projects
• Heavy-duty profile withstands high tensile loads in demanding mechanical applications

Professional Applications & Engineering Value

This extra long coupling nut solves critical connection challenges in industrial assembly where standard nuts fall short. The 18-8 stainless steel material provides exceptional corrosion resistance for applications in chemical processing, marine environments, and outdoor installations. The 4" length with 5/8" minimum thread engagement ensures maximum load distribution when joining threaded rods, preventing stress concentration points that lead to failure. The UNC coarse thread pattern combined with Class 2B thread fit maintains connection integrity under vibration while allowing for quicker assembly than fine-thread alternatives. Ideal for construction frameworks, machinery alignment systems, and extended fastener applications requiring reliable, long-span connections.

Specification Summary & Compliance

This coupling nut features 1/2"-13 UNC coarse threading with Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and interchangeability. The partially threaded design provides controlled engagement length while the external hex drive (3/4" width) accommodates standard wrenching tools. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making it suitable for regulated industrial applications requiring environmental compliance.