S-95170A390 1/4"-20 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
Washer Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance with integrated spring steel lock washer that maintains clamping force in high-motion environments
- Enhanced corrosion protection through zinc-plated steel construction for extended service life in harsh conditions
- Quick installation efficiency with UNC coarse 1/4"-20 threading that reduces cross-threading risks during assembly
- Reliable thread engagement through Class 2B fit tolerance ensuring consistent performance across multiple installations
- Standard tool compatibility with 7/16" external hex design for common wrench applications
- Right-hand thread design for intuitive installation following conventional fastener standards
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for industrial safety requirements
Professional Applications & Engineering Value
This zinc-plated steel locknut with integrated spring lock washer addresses critical vibration-induced loosening in industrial machinery, automotive assemblies, and structural frameworks. The UNC coarse threading (1/4"-20) combined with Class 2B thread fit provides optimal clearance for rapid installation while maintaining secure fastening in high-vibration environments. The external hex drive (7/16") ensures compatibility with standard tools, reducing installation time and tooling costs. The steel spring washer creates constant tension that compensates for thermal expansion and vibration, preventing catastrophic fastener failure in demanding applications from manufacturing equipment to transportation systems.
Specification Summary & Compliance
This locknut features 1/4"-20 UNC coarse threading with Class 2B thread fit per ASME standards, ensuring proper clearance for reliable engagement. The zinc-plated steel construction provides corrosion resistance while the integrated spring steel lock washer (0.5" OD) delivers vibration-resistant performance. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting international environmental and safety standards for industrial fastener applications.
