S-90631A122 M20 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 locking mechanism, preventing loosening in high-motion environments
- Durable corrosion protection with zinc-plated steel construction for extended service life in industrial conditions
- High-temperature performance maintaining locking integrity up to 220°F (104°C) for demanding applications
- Precision thread engagement with Class 6H fit ensuring reliable fastening and consistent torque performance
- Easy installation and removal with standard external hex drive compatible with common wrench tools
- Optimized for coarse threading providing faster assembly and reduced cross-threading risk in metric applications
- Regulatory compliance meeting RoHS 3 and REACH standards for global industrial use
Professional Applications & Engineering Value
This M20 nylon insert locknut delivers critical vibration-resistant performance in demanding industrial applications where secure fastening is paramount. The zinc-plated steel construction provides excellent corrosion resistance for machinery, automotive, and structural assemblies exposed to harsh environments. With its coarse metric threading and Class 6H precision fit, this locknut ensures reliable engagement while accommodating typical manufacturing tolerances. The nylon insert creates consistent friction against the mating bolt, maintaining clamp force even under continuous vibration and thermal cycling up to 220°F maximum temperature. The external hex drive design allows for efficient installation using standard tools, reducing assembly time while providing the security needed for critical connections in heavy equipment, transportation systems, and industrial machinery.
Specification Summary & Compliance
This metric M20x2.5 mm locknut features Class 6H thread fit per ISO standards with coarse thread spacing for optimal performance. The zinc-plated steel construction meets industrial durability requirements while providing corrosion protection. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental compliance for global industrial applications. Physical dimensions include 30mm width across flats and 22mm height for standard tool compatibility.
