S-97190A230 1 1/4"-12 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
- Maximum vibration resistance through secure cotter pin locking mechanism that prevents loosening under extreme conditions
- Enhanced durability and corrosion protection with zinc-plated steel construction suitable for demanding industrial environments
- Superior load-bearing capacity with Grade 5 strength classification for heavy-duty applications
- Precise thread engagement with Class 2B UNF fine threads ensuring reliable fastening performance
- Easy installation and removal using standard external hex drive compatible with common tools
- Safety-critical security with integrated castle design accommodating 5/16" cotter pins for permanent locking
- Regulatory compliance assurance meeting both REACH and RoHS 3 environmental standards
Professional Applications & Engineering Value
This Grade 5 castle locknut with 1 1/4"-12 UNF fine threads provides critical vibration-resistant fastening solutions for industrial machinery, automotive assemblies, and heavy equipment. The zinc-plated steel construction offers excellent corrosion resistance while maintaining Grade 5 strength under high-stress conditions. The external hex drive allows for straightforward installation with standard wrenches, while the castle design with cotter pin compatibility ensures permanent locking in safety-critical applications where vibration-induced loosening could lead to catastrophic failure. This industrial locknut is engineered to maintain integrity in demanding environments where reliability is paramount.
Specification Summary & Compliance
This castle locknut features 1 1/4"-12 UNF fine threads with Class 2B thread fit for precise engagement, manufactured to standard inch dimensions. The nut meets Grade 5 strength classification requirements and is compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations. Designed to accommodate 5/16" cotter pins with minimum slot dimensions of 0.33" depth and 0.31" width, ensuring reliable locking performance in industrial applications.
