S-90636A117 7/8"-9 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 precision distorted center lock threads, preventing loosening in high-stress environments
- Exceptional durability with Grade 8 steel construction, offering high tensile strength for heavy-duty industrial applications
- Reliable thread engagement with UNC coarse threads and Class 2B fit, ensuring easy installation and secure fastening
- Enhanced corrosion protection from black-oxide coating, extending service life in demanding conditions
- Industry-standard compatibility with inch system measurements and external hex drive, facilitating quick assembly with common tools
- Environmental compliance meeting REACH and RoHS 3 standards, making it suitable for regulated industrial sectors
- Consistent performance with standard hex profile, providing uniform torque application and reduced installation errors
Professional Applications & Engineering Value
This Grade 8 steel locknut with distorted center lock thread design addresses critical vibration-induced loosening in heavy machinery, construction equipment, and automotive assemblies. The black-oxide finish provides essential corrosion resistance while maintaining dimensional stability under extreme loads. Engineered with UNC coarse threads and Class 2B thread fit, it ensures reliable performance in high-vibration environments where standard fasteners fail. The external hex drive allows for efficient installation using common wrenching tools, reducing assembly time in industrial maintenance and manufacturing applications while meeting stringent REACH and RoHS compliance requirements.
Specification Summary & Compliance
This heavy-duty locknut features 7/8"-9 UNC coarse threads with Class 2B thread fit tolerances, manufactured to industrial standards for consistent performance. The distorted thread locking mechanism provides permanent vibration resistance without requiring additional locking elements. Compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, ensuring environmental safety in industrial applications. The Grade 8 strength classification guarantees high tensile performance for critical fastening requirements.
