S-90983A205 1/4"-20 x 7/8" Coupling Nuts
Coupling Nuts
Image may differ from product. See technical specification for details.
Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional tensile strength with Grade 8 classification for reliable performance in high-stress applications
- Superior corrosion resistance through zinc-plated steel construction, extending service life in harsh environments
- Precise thread engagement with Class 2B fit ensuring smooth assembly and reduced cross-threading risks
- Optimized torque transmission via external hex drive design for secure installation with standard tools
- Versatile connectivity with fully threaded right-hand UNC coarse pattern for joining threaded rods or studs
- Regulatory compliance meeting RoHS 3 and REACH standards for safe industrial usage
- Dimensional reliability with standardized 1/4"-20 thread size maintaining compatibility across systems
Professional Applications & Engineering Value
This Grade 8 coupling nut delivers critical performance where structural integrity and environmental durability are paramount. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, machinery frames, and construction assemblies exposed to moisture. The fully threaded UNC coarse pattern with Class 2B thread fit ensures consistent engagement across connected components, minimizing vibration-induced loosening in automotive, manufacturing, and infrastructure applications. The external hex drive facilitates quick installation in confined spaces, while the right-hand threading maintains compatibility with standard fastening systems. Engineered to withstand extreme mechanical stresses, this coupling nut solves connection reliability challenges in heavy-duty industrial environments.
Specification Summary & Compliance
Manufactured to precise dimensional standards with 1/4"-20 UNC coarse threads and Class 2B thread fit tolerance. The fastener meets Grade 8 strength requirements and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Standard external hex drive configuration with fully threaded right-hand design ensures consistent performance across industrial applications.
