S-90983A230 3/4"-16 x 2 1/4" Coupling Nuts

Key Features & Benefits at a Glance

• Exceptional Tensile Strength – Grade 8 rating ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding assemblies.
• Superior Corrosion Resistance – Zinc-plated steel construction provides durable protection against rust and environmental exposure, extending service life in harsh industrial settings.
• Precise Thread Engagement – Class 2B fine UNF threads offer smooth, accurate mating with minimal play, enhancing joint integrity and vibration resistance.
• Optimized Torque Application – External hex drive design allows for easy installation with standard tools, improving assembly efficiency and reducing labor time.
• Versatile Coupling Capability – Fully threaded, right-hand design enables secure connection of two threaded rods or bolts, ideal for extending or joining components in structural applications.
• Regulatory Compliance Assurance – Meets RoHS 3 and REACH standards, ensuring safe use in regulated industries and global market acceptance.
• Robust Dimensional Profile – 2 1/4" length and 1 1/8" width provide ample grip and strength for heavy-duty fastening without adding excessive weight.

Professional Applications & Engineering Value

This Grade 8 coupling nut is engineered to address critical challenges in industrial assembly, where high tensile strength and vibration resistance are paramount. The zinc-plated steel material combats corrosion in outdoor or chemically exposed environments, while the fine UNF threading with Class 2B fit ensures precise alignment and load distribution across connected components. Commonly used in machinery frames, construction equipment, and automotive systems, this external hex coupling nut simplifies maintenance and repairs by allowing straightforward extension of threaded rods or bolts. Its fully threaded design maximizes engagement depth, reducing stress concentration and preventing loosening under dynamic loads, making it a dependable choice for engineers prioritizing longevity and safety in heavy-duty applications.

Specification Summary & Compliance

This coupling nut adheres to UNF thread standards with a size of 3/4"-16 and Class 2B thread fit for consistent dimensional accuracy. Manufactured from zinc-plated steel and rated Grade 8 for high mechanical strength, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental safety and regulatory alignment for industrial fastener applications.