S-90268A438 5/8"-11 x 4" 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
- Extended connection capability with 4" extra long profile for joining longer threaded rods or bolts with substantial spacing
- Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
- Reliable coarse threading with 5/8"-11 UNC specification providing excellent engagement and vibration resistance
- Precision thread fit meeting Class 2B standards for consistent performance and easy assembly
- Secure external hex drive enabling high-torque installation with standard wrenching tools
- Optimized partial threading design reducing weight while maintaining full functional strength
- Environmental compliance with RoHS 3 and REACH regulations for global manufacturing applications
Professional Applications & Engineering Value
This extra long coupling nut solves critical connection challenges in structural assemblies, machinery framing, and extended fastener systems where standard nuts cannot bridge the required distance. The 18-8 stainless steel composition delivers essential corrosion resistance for outdoor installations, chemical processing equipment, and marine applications, while the UNC coarse threading ensures rapid assembly and disassembly in maintenance scenarios. The partially threaded design strategically reduces material usage without compromising the Class 2B thread fit precision, making it both cost-effective and performance-optimized for heavy-duty industrial applications requiring reliable, long-lasting threaded connections.
Specification Summary & Compliance
This coupling nut maintains Class 2B thread fit tolerance per UNC standards with 5/8"-11 coarse threading and right-hand thread direction. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for regulated industrial applications. Dimensions include 4" length, 7/8" width across flats, and minimum thread length of 15/16" for secure fastening performance.
