S-90640A135 5/8"-11 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 that maintains clamp force in high-motion environments
- Enhanced corrosion protection with zinc plating that extends service life in demanding industrial conditions
- Reliable high-temperature performance with nylon insert rated for continuous operation up to 220°F
- Quick installation and removal with standard external hex drive and coarse UNC threads for efficient assembly
- Precise thread engagement with Class 2B fit ensuring consistent performance and reduced cross-threading risk
- Right-hand threading compatibility with standard industrial equipment and existing fastener systems
- Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications
Professional Applications & Engineering Value
This 5/8"-11 nylon insert lock nut delivers critical vibration-resistant fastening for industrial machinery, automotive assemblies, and heavy equipment where constant motion threatens joint integrity. The zinc-plated steel construction provides durable corrosion resistance while the nylon insert creates consistent locking force without damaging mating threads. Engineered with coarse UNC threads and Class 2B fit, this external hex locknut ensures rapid installation in high-volume production environments while maintaining reliable performance under thermal cycling up to 220°F. The combination of mechanical locking and environmental protection makes this fastener ideal for applications requiring long-term reliability without frequent maintenance interventions.
Specification Summary & Compliance
This locknut features 5/8"-11 UNC coarse threads with Class 2B thread fit for standard industrial applications. Dimensions include 15/16" width across flats and 3/4" height. Manufactured to industry standards for external hex drive locknuts with right-hand threading. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for your assembled products.
