S-91034A421 1"-8 x 2 1/2" 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 black-oxide steel coating, extending service life in harsh industrial environments
- Superior torque transmission through external hex drive design for secure tightening with standard tools
- Reliable thread engagement with fully threaded construction ensuring maximum contact surface for stable connections
- Precise thread compatibility with Class 2B fit and UNC coarse threading for easy assembly and vibration resistance
- Heavy-duty connecting capability with 2½" length and 1¼" width for robust joining of threaded rods and components
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe industrial applications
- Simplified inventory management with standardized 1"-8 UNC thread size fitting common industrial specifications
Professional Applications & Engineering Value
This black-oxide steel coupling nut delivers critical performance in demanding applications where threaded rod connections must withstand mechanical stress and environmental exposure. The fully threaded UNC coarse pattern ensures rapid assembly while maintaining structural integrity under vibration, making it ideal for construction frameworks, machinery assembly, and infrastructure projects. The external hex drive accommodates high-torque installation without stripping, while the black-oxide finish provides essential corrosion protection in industrial settings. Engineers specify this heavy-duty connector for its reliable performance in joining threaded components where alignment and strength are paramount, reducing maintenance intervals and connection failures in critical assemblies.
Specification Summary & Compliance
This coupling nut features 1"-8 UNC coarse threads with Class 2B thread fit ensuring precise dimensional accuracy per standardized specifications. The external hex drive measures 1¼" across flats with a 2½" overall length. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial fastener applications.
