S-90983A211 3/8"-16 x 1 3/4" Coupling Nuts

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with Grade 8 strength classification, ensuring reliable performance in high-stress applications
• Superior corrosion resistance through zinc-plated steel construction, extending service life in harsh industrial environments
• Precise thread engagement with Class 2B UNC coarse threads, providing consistent mating and reducing cross-threading risks
• Versatile connection capability through full threading along the entire 1-3/4" length, accommodating various rod and bolt lengths
• Easy installation and removal with external hex drive design, allowing standard wrench access in confined spaces
• Regulatory compliance assurance meeting RoHS 3 and REACH standards, ensuring environmental and safety requirements
• Optimized torque transmission with 5/8" hex width, providing secure tool engagement during tightening operations

Professional Applications & Engineering Value

This Grade 8 coupling nut delivers exceptional engineering value in demanding industrial settings where tensile strength and thread reliability are critical. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, machinery assemblies, and structural frameworks exposed to environmental elements. With its 3/8"-16 UNC coarse threading and Class 2B fit, this fully threaded coupling nut ensures precise alignment and secure connections between threaded rods, bolts, or studs in extended-length applications. The external hex drive style facilitates straightforward installation in confined spaces common in manufacturing equipment, automotive systems, and construction projects. Engineers specify this heavy-duty fastener for its consistent performance in vibration-prone environments where maintaining joint integrity is paramount to operational safety and equipment longevity.

Specification Summary & Compliance

This coupling nut features 3/8"-16 UNC coarse threads with Class 2B thread fit for standard compatibility and precise engagement. Manufactured from zinc-plated steel with dimensions of 1-3/4" length and 5/8" width across flats. The fastener meets Grade 8 strength requirements and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory compliance for industrial applications worldwide.