S-90012A101 4-40 x 7/16" Coupling Nuts
Coupling Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior torque transmission with external hex drive design for secure tightening in confined spaces
- Lightweight yet durable connections through 6061 aluminum construction reducing overall assembly weight
- Reliable thread engagement with Class 2B thread fit ensuring consistent mating with male threaded components
- Quick assembly efficiency through coarse UNC threading enabling faster installation compared to fine threads
- Extended service life with fully threaded design distributing load evenly across the entire nut length
- Environmental compliance assurance meeting both REACH and RoHS 3 standards for industrial safety
- Standardized compatibility with 4-40 UNC components for seamless integration into existing systems
Professional Applications & Engineering Value
This 4-40 UNC coupling nut delivers critical engineering value in applications where extended connections between male threaded rods or bolts are required. The 6061 aluminum construction provides an optimal balance between corrosion resistance and mechanical strength, while the external hex drive profile ensures maximum torque application without specialized tools. The fully threaded, coarse UNC pattern with Class 2B thread fit prevents cross-threading during assembly and maintains vibration resistance in dynamic environments. Ideal for industrial machinery, electronic enclosures, and precision equipment, this coupling nut solves common challenges of weight reduction, corrosion prevention, and reliable thread engagement in demanding applications.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2B thread fit for consistent performance across UNC threaded components. The nut features 5/16" width across flats and 7/16" length with right-hand coarse threading. Compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) standards with exemption 6(b)-II for lead as an alloying element in aluminum machining applications.
