S-90636A074 5/8"-18 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 center lock distorted thread design that maintains clamping force under extreme conditions
- Exceptional corrosion protection with zinc yellow-chromate plating that withstands harsh industrial environments
- Heavy-duty performance backed by Grade 8 strength classification for high-stress applications
- Precise thread engagement with UNF fine thread (5/8"-18) and Class 2B fit ensuring reliable, secure fastening
- Easy installation and removal using standard external hex drive with 15/16" width for common tool compatibility
- Optimized profile design with 35/64" height providing space efficiency without compromising locking performance
- Right-hand thread compatibility with standard industrial equipment and existing fastener systems
Professional Applications & Engineering Value
This Grade 8 locknut with center lock distorted thread technology addresses critical vibration-induced loosening challenges in heavy machinery, automotive, and construction equipment. The zinc yellow-chromate plated steel construction provides dual protection against corrosion and wear, extending service life in demanding environments. The UNF fine thread (5/8"-18) ensures superior thread engagement and load distribution, while the distorted thread locking mechanism creates permanent resistance to rotational forces without requiring additional locking components. This industrial-grade solution eliminates maintenance downtime and ensures operational safety in vibration-intensive applications where fastener integrity is paramount.
Specification Summary & Compliance
Manufactured to precise Class 2B thread fit standards with UNF fine thread specifications (5/8"-18). Features external hex drive (15/16" width) and standard height profile (35/64"). Complies with industry standards for Grade 8 strength classification and meets relevant industrial specifications for heavy-duty locking fasteners. The zinc yellow-chromate plating provides corrosion resistance while maintaining dimensional accuracy and mechanical properties.
