S-90654A305 1/4"-20 x 7/8" Coupling Nuts

Key Features & Benefits at a Glance

• Exceptional Tensile Strength - ASTM Grade 2H certification ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Precise Thread Compatibility - Class 2B thread fit provides smooth engagement with mating components, minimizing cross-threading and installation errors.
• Superior Durability - Made from high-quality steel with full threading, offering consistent load distribution and resistance to vibration loosening.
• Industry-Standard Compliance - Meets RoHS 3 and REACH environmental regulations, ensuring safe use in various industrial sectors without hazardous substances.
• Easy Installation & Removal - External hex drive design allows for quick assembly using standard tools, saving time and labor costs in maintenance operations.
• Versatile Coarse Thread Design - 1/4"-20 UNC coarse threads enable faster installation and better performance in materials prone to stripping or corrosion.
• Robust Construction - Standard coupling nut profile with right-hand threading ensures long service life in heavy-duty connecting applications.

Professional Applications & Engineering Value

This 1/4"-20 UNC coupling nut is engineered to address common challenges in industrial assembly, such as maintaining structural integrity under dynamic loads. The ASTM Grade 2H steel construction provides high tensile strength, making it ideal for connecting threaded rods or bolts in scaffolding, machinery, and automotive systems where vibration resistance is critical. Its fully threaded design ensures uniform stress distribution, preventing point failures and extending the lifespan of connected components. The external hex drive facilitates easy tightening in confined spaces, while the coarse thread spacing enhances grip in softer materials or corrosive environments. By complying with RoHS and REACH standards, it supports sustainable manufacturing practices without compromising on performance reliability.

Specification Summary & Compliance

This coupling nut features precise Class 2B thread fit with UNC coarse threading (1/4"-20) and right-hand direction, manufactured to ASTM Grade 2H standards for consistent dimensional accuracy. It adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory alignment in industrial fastener applications.