S-90977A225 7/8"-14 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
- Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
- High-strength Grade 5 rating ensures reliable performance under heavy loads and vibration
- Precision Class 2B thread fit provides smooth assembly and secure connections with mating components
- External hex drive design allows for easy installation using standard tools, reducing assembly time
- Fully threaded UNF fine pitch offers excellent engagement and vibration resistance in critical applications
- Compliance with RoHS 3 and REACH standards ensures environmental responsibility and global market acceptance
- Standard coupling profile delivers consistent performance across various industrial fastening systems
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel coupling nut delivers exceptional engineering value in applications requiring extended-length threaded connections. The 7/8"-14 UNF fine threading with Class 2B fit ensures precise alignment and secure joining of threaded rods or studs in structural assemblies, machinery, and heavy equipment. The zinc-plated finish provides reliable corrosion protection, making it suitable for industrial environments where moisture or chemical exposure is a concern. The external hex drive facilitates quick installation with common tools, while the fully threaded design allows for maximum adjustability in tension applications. These features combine to solve common challenges in construction, manufacturing, and maintenance operations where coupling nuts must withstand vibration, heavy loads, and harsh conditions while maintaining long-term connection integrity.
Specification Summary & Compliance
This coupling nut features 7/8"-14 UNF fine threading with Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy and compatibility. Manufactured from zinc-plated steel with Grade 5 strength rating, it measures 1-1/4" in width and 2-1/2" in length. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, meeting current regulatory requirements for hazardous substance restrictions.
