S-90268A444 5/8"-18 x 6" 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 with 18-8 Stainless Steel construction for long-term reliability in harsh environments
- Extended 6" length provides superior reach and flexibility for connecting components at larger distances
- Precise Class 2B thread fit ensures smooth, secure engagement and reduces the risk of cross-threading during assembly
- Partially threaded design offers versatility for applications requiring specific grip lengths or unthreaded sections
- Fine UNF threading (5/8"-18) delivers higher tensile strength and improved vibration resistance compared to coarse threads
- External hex drive allows for easy installation and removal with standard wrenches, speeding up assembly processes
- Full regulatory compliance with RoHS 3 and REACH standards ensures safety and environmental responsibility in industrial use
Professional Applications & Engineering Value
This extra long coupling nut is engineered to solve critical challenges in industrial assembly and machinery. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it ideal for outdoor, marine, or chemical-exposed environments. Its 6" length and partially threaded profile allow for bridging larger gaps between male-threaded rods or bolts, which is essential in structural frameworks, conveyor systems, and custom machinery setups. The UNF fine thread and Class 2B fit ensure a tight, reliable connection that maintains integrity under vibration and dynamic loads. These features make it a go-to solution for heavy-duty applications requiring extended reach, durability, and consistent performance.
Specification Summary & Compliance
This coupling nut adheres to Class 2B thread fit tolerances for consistent, precise threading. It conforms to UNF (Unified National Fine) standards with a thread size of 5/8"-18 and a minimum thread length of 15/16". The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial fasteners.
