S-99291A210 1"-8 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 distorted top-lock threads that maintain clamping force in high-stress environments
- Enhanced corrosion protection with zinc yellow-chromate plating that withstands harsh industrial conditions
- Reliable thread engagement with Class 2B fit ensuring consistent performance and easy assembly
- Heavy-duty construction meeting ASTM Grade C specifications for demanding applications
- Quick installation with standard external hex drive compatible with common tools
- Optimized for coarse threading (1"-8 UNC) providing excellent resistance to loosening under dynamic loads
- Right-hand thread design compatible with standard industrial components and fastening systems
Professional Applications & Engineering Value
Engineered for high-vibration environments where traditional fasteners fail, these distorted thread locknuts provide permanent security in industrial machinery, automotive assemblies, and heavy equipment. The zinc yellow-chromate-plated steel construction delivers exceptional corrosion resistance while maintaining the structural integrity required for ASTM Grade C applications. The 1"-8 UNC coarse thread profile ensures rapid installation and removal while the top-lock distorted thread design creates mechanical interference that prevents spontaneous loosening under continuous stress cycles. This combination of material strength and engineered locking mechanism solves critical safety concerns in vibration-prone applications where fastener failure could lead to equipment damage or operational downtime.
Specification Summary & Compliance
This heavy-duty locknut features precise Class 2B thread fit with 1"-8 UNC coarse threading and right-hand thread direction. Manufactured to ASTM Grade C specifications with standard hex profile (1 1/2" width) and 55/64" height. The zinc yellow-chromate plating provides corrosion protection while maintaining compliance with industrial standards for distorted thread locking nuts. Suitable for applications requiring reliable vibration resistance and consistent performance in demanding environments.
