S-97190A150 9/16"-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
- Superior vibration resistance through cotter pin locking mechanism that prevents loosening under extreme conditions
- Enhanced corrosion protection with zinc plating that extends service life in demanding industrial environments
- High-strength performance with Grade 5 classification ensuring reliable load-bearing capacity
- Easy installation and maintenance with standard 7/8" external hex drive for common tool compatibility
- Secure locking function designed specifically for 9/64" cotter pins with optimized slot dimensions
- Precise thread engagement with Class 2B UNC coarse threads for smooth assembly and disassembly
- Regulatory compliance assurance meeting both REACH and RoHS 3 environmental standards
Professional Applications & Engineering Value
This Grade 5 castle locknut delivers critical safety and reliability in high-vibration applications where fastener integrity is paramount. The zinc-plated steel construction provides durable corrosion resistance while maintaining the mechanical strength required for heavy machinery, agricultural equipment, and automotive assemblies. The 9/16"-12 UNC coarse threads with Class 2B fit ensure consistent engagement and disengagement without galling, while the castellated design with precisely machined slots accommodates standard cotter pins for positive mechanical locking. This engineering solution addresses the common industrial challenge of fastener loosening due to vibration, making it ideal for critical connections in construction equipment, transportation systems, and industrial machinery where failure prevention is essential.
Specification Summary & Compliance
This castle locknut features 9/16"-12 UNC coarse threads with Class 2B thread fit tolerance, 7/8" hex width, and 31/64" height. The fastener is manufactured from Grade 5 steel with zinc plating and is designed for use with 9/64" cotter pins, featuring minimum slot dimensions of 0.163" depth and 0.15" width. The product complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring regulatory compliance for industrial applications worldwide.
