S-92501A521 1/4"-20 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through top lock distorted thread design, preventing loosening in high-stress environments
- Enhanced corrosion protection with zinc-plated steel construction for extended service life in industrial conditions
- Reliable thread engagement with Class 2B thread fit ensuring consistent performance and easy installation
- Heavy-duty performance meeting ASTM Grade C specifications for demanding mechanical applications
- Standard external hex drive for compatibility with common wrenching tools and straightforward installation
- Precision UNC coarse threading (1/4"-20) providing excellent assembly efficiency and mechanical advantage
- Comprehensive compliance with RoHS 3 and REACH environmental standards for global industrial use
Professional Applications & Engineering Value
This 1/4"-20 UNC top lock locknut delivers critical vibration-resistant performance for machinery, automotive, and industrial equipment where secure fastening is paramount. The distorted thread technology creates controlled interference that maintains clamp force under dynamic loads, effectively solving common loosening issues in high-vibration environments. Manufactured from zinc-plated steel, it provides durable corrosion resistance while the ASTM Grade C certification ensures consistent mechanical properties. The external hex drive and coarse thread design enable rapid installation and removal, making it ideal for maintenance-intensive applications. This engineered solution combines reliable locking action with industrial-grade materials to prevent costly downtime and safety hazards.
Specification Summary & Compliance
This locknut features 1/4"-20 UNC coarse threads with Class 2B thread fit for standard industrial applications. The distorted top lock design provides the primary locking mechanism, while the 7/16" hex profile ensures proper tool engagement. Manufactured to ASTM Grade C specifications, this fastener meets rigorous mechanical requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
