S-90983A223 5/8"-11 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
- Maximum Load Capacity: Grade 8 strength rating ensures reliable performance in high-stress applications, preventing fastener failure.
- Superior Corrosion Resistance: Zinc-plated steel construction provides durable protection against rust and environmental degradation.
- Precise Thread Engagement: Class 2B thread fit guarantees consistent, secure connections with reduced risk of cross-threading.
- Optimized Torque Transfer: External hex drive design allows for high-torque installation using standard tools without slippage.
- Versatile Connectivity: Fully threaded right-hand UNC coarse pattern enables easy alignment and extended engagement length.
- Regulatory Compliance: Meets RoHS 3 and REACH environmental standards for safe use in regulated industries.
- Dimensional Consistency: Standard 15/16" width and 2-1/8" length ensure compatibility with existing assembly specifications.
Professional Applications & Engineering Value
This Grade 8 coupling nut delivers exceptional engineering value through its zinc-plated steel construction and UNC coarse threading. The combination of heavy-duty material and Class 2B thread fit addresses critical industrial challenges including vibration-induced loosening and corrosion in demanding environments. The fully threaded design with external hex drive provides maximum torque capability for structural connections in machinery, construction, and transportation equipment. These coupling nuts maintain integrity under extreme tension while the coarse thread pattern ensures rapid assembly in time-sensitive production scenarios.
Specification Summary & Compliance
Manufactured to precise dimensional standards with 5/8"-11 UNC coarse threads maintaining Class 2B fit tolerances for consistent performance. Complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations regarding hazardous substances. The Grade 8 strength classification confirms adherence to industrial fastener specifications for heavy-duty applications.
