S-90268A419 3/8"-24 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 reliability in harsh environments and outdoor applications
• UNF fine threading with Class 2B thread fit delivers precise, vibration-resistant connections that maintain integrity under load
• Partially threaded design allows for controlled fastening depth and prevents over-tightening in critical assemblies
• External hex drive style enables easy installation with standard wrenches for efficient maintenance and assembly
• RoHS 3 and REACH compliance guarantees environmental responsibility and global regulatory acceptance for industrial projects
• Heavy-duty profile withstands high tensile loads in construction, machinery, and transportation applications

Professional Applications & Engineering Value

This extra long coupling nut solves critical connection challenges in industrial assemblies where standard nuts cannot provide sufficient thread engagement. The 18-8 stainless steel material offers exceptional corrosion resistance, making it ideal for marine, chemical processing, and outdoor infrastructure applications where environmental factors degrade ordinary fasteners. The UNF fine threading with Class 2B thread fit ensures precise mating with corresponding male threads, reducing the risk of vibration-induced loosening in machinery and equipment. The partially threaded configuration allows engineers to control engagement depth precisely, preventing bottom-out issues while maintaining full tensile strength across the 4" length. These features combine to create a reliable connecting solution for structural frameworks, extended shaft assemblies, and heavy equipment where connection integrity is paramount.

Specification Summary & Compliance

This coupling nut features 3/8"-24 UNF fine threading with Class 2B thread fit per unified thread standards, ensuring compatibility with corresponding male threads. The right-hand thread direction and external hex drive provide industry-standard installation. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and substance restrictions for global industrial applications. The 5/8" minimum thread length and 4" overall length provide extended engagement capability while maintaining dimensional precision throughout the coupling profile.