S-90264A255 7/8"-14 x 2 1/2" Coupling Nuts

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Zinc-plated steel construction provides reliable protection against rust and wear in demanding industrial environments.
• Superior Thread Engagement: Fully threaded Class 2B fine thread (UNF) ensures a precise, secure, and vibration-resistant connection for extended service life.
• High-Torque Installation Capability: External hex drive design allows for easy application of high torque with standard wrenches, speeding up assembly.
• Robust Coupling Strength: Standard profile and 2-1/2" length offer a strong, stable link for joining threaded rods or studs under heavy loads.
• Wide Application Compatibility: Right-hand 7/8"-14 UNF fine threading is ideal for various industrial machinery and equipment requiring reliable couplings.
• Environmental & Regulatory Compliance: Meets RoHS 3 and REACH standards, ensuring safe use in regulated markets and sustainable operations.
• Dimensional Precision: Consistent 1-1/4" width and fine thread spacing guarantee accurate fit and repeatable performance in assembly lines.

Professional Applications & Engineering Value

This 7/8"-14 UNF coupling nut is engineered to solve critical challenges in industrial applications where reliable, long-lasting threaded connections are essential. Constructed from zinc-plated steel, it resists corrosion and mechanical stress, making it ideal for harsh environments like construction, automotive, and heavy machinery. The fully threaded design with Class 2B fine threads and right-hand direction ensures maximum thread contact, reducing the risk of loosening under vibration and dynamic loads. Its external hex drive facilitates quick installation with common tools, enhancing efficiency in assembly processes. By providing a durable, compliant solution, this nut supports coupling connections that maintain integrity in high-stress scenarios, from structural frameworks to equipment maintenance.

Specification Summary & Compliance

This coupling nut features precise Class 2B thread fit per UNF standards, ensuring tight tolerances for reliable performance. Dimensions include a 2-1/2" length and 1-1/4" width in the inch system, with fine 7/8"-14 UNF threading. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial use.