S-99291A530 7/8"-14 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
- Vibration-resistant locking through distorted thread design prevents loosening in high-stress environments
- Enhanced corrosion protection with black-oxide steel construction for extended service life
- Reliable load-bearing capacity meeting ASTM Grade C strength requirements for heavy-duty applications
- Precise thread engagement with Class 2B fit ensuring consistent performance and easy assembly
- Standard external hex drive for compatibility with common tools and straightforward installation
- Environmental compliance with RoHS 3 and REACH standards for safe industrial use
- Fine UNF thread profile providing superior holding power in demanding mechanical systems
Professional Applications & Engineering Value
This 7/8"-14 UNF locknut with distorted thread locking technology addresses critical vibration-induced failure points in industrial machinery, automotive assemblies, and heavy equipment. The black-oxide steel construction provides superior corrosion resistance in harsh operating environments, while the top lock distorted thread design creates permanent fastening security without requiring additional locking components. Engineered with ASTM Grade C strength rating and Class 2B thread fit, this external hex locknut delivers reliable performance in high-torque applications where vibration resistance and long-term durability are essential. The fine UNF thread profile ensures optimal load distribution and maintains clamping force under extreme conditions.
Specification Summary & Compliance
This locknut features 7/8"-14 UNF fine threads with Class 2B thread fit for precise dimensional accuracy. Manufactured to meet ASTM Grade C strength requirements with right-hand thread direction and standard external hex drive configuration. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe usage across industrial sectors. Physical dimensions include 1 5/16" width and 3/4" height for standardized application requirements.
