S-90640A134 9/16"-12 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through nylon insert technology that maintains locking force in high-motion environments
- Reliable performance up to 220°F for consistent locking capability in elevated temperature applications
- Enhanced corrosion protection with zinc plating that extends service life in demanding industrial conditions
- Precise Class 2B thread fit ensures smooth installation and optimal engagement with mating components
- Standard external hex design provides familiar, tool-friendly installation with common wrenching tools
- Coarse UNC threading enables quick assembly and reduced cross-threading risks in production environments
- Reusable locking capability allows for multiple installations while maintaining vibration resistance
Professional Applications & Engineering Value
This 9/16"-12 UNC nylon insert locknut delivers critical vibration-resistant performance for industrial machinery, automotive assemblies, and heavy equipment where secure fastening under dynamic loads is essential. The zinc-plated steel construction provides durable corrosion resistance while the nylon insert creates consistent friction locking that prevents loosening from machinery vibrations and thermal cycling. Engineered with coarse thread design for rapid installation in production lines and maintenance applications, this external hex locknut offers reliable performance in temperatures up to 220°F, making it suitable for engine compartments, motor mounts, and industrial equipment subjected to both mechanical stress and moderate heat exposure.
Specification Summary & Compliance
Manufactured to precise Class 2B thread tolerances with UNC coarse threading (9/16"-12) and right-hand thread direction. Dimensions include 7/8" width across flats and 41/64" height. This locknut meets RoHS 3 (2015/863/EU) compliance standards and is REACH (EC 1907/2006) compliant, ensuring environmental responsibility and regulatory adherence for industrial fastener applications.
