S-90268A350 5/8"-18 x 2 1/8" Coupling Nuts
Coupling Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Superior connection strength and reliability with fully threaded design and UNF fine threading for maximum load distribution
- Precise, secure mating ensured by Class 2B thread fit, reducing the risk of cross-threading and assembly failures
- Easy installation and removal with external hex drive style, allowing for standard wrenching tools
- Broad compatibility with inch-system components and right-hand thread direction for versatile application use
- Long-term operational safety supported by compliance with RoHS 3 and REACH environmental regulations
- Durable, maintenance-free performance due to robust stainless steel material and standard coupling nut profile
Professional Applications & Engineering Value
This 5/8"-18 UNF coupling nut delivers critical engineering value by solving common industrial fastening challenges. Its 18-8 Stainless Steel composition provides excellent resistance to rust and oxidation, making it suitable for outdoor, marine, or chemical-exposed settings where corrosion resistance is paramount. The fine thread and Class 2B thread fit ensure tight, vibration-resistant connections in precision assemblies, such as machinery, automotive, and structural frameworks. The fully threaded, right-hand design allows for extended engagement, enhancing joint integrity under dynamic loads. As an external hex coupling nut, it facilitates quick assembly and disassembly, reducing downtime in maintenance-heavy operations while meeting strict RoHS and REACH standards for safe, sustainable use.
Specification Summary & Compliance
This coupling nut adheres to UNF fine thread standards with a size of 5/8"-18 and Class 2B thread fit for consistent dimensional accuracy and reliable performance. It features a standard inch-system profile, with a width of 13/16" and length of 2 1/8", ensuring compatibility with a wide range of industrial components. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global supply chains.
