S-97190A190 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
- Superior vibration resistance through cotter pin locking mechanism for critical safety applications
- Enhanced corrosion protection with zinc-plated steel construction in harsh industrial environments
- High-strength performance meeting Grade 5 specifications for demanding mechanical assemblies
- Precise thread engagement with UNF fine threads and Class 2B fit for reliable fastening
- Easy installation and removal using standard wrenches with external hex drive design
- Comprehensive safety compliance with REACH and RoHS 3 environmental regulations
- Optimized slot dimensions (0.204" depth, 0.18" width) for secure 3/16" cotter pin retention
Professional Applications & Engineering Value
This Grade 5 castle locknut delivers exceptional engineering value in applications where vibration-induced loosening poses significant safety risks. The zinc-plated steel construction provides durable corrosion resistance while maintaining the mechanical strength required for heavy-duty assemblies. The 7/8"-14 UNF fine threads with Class 2B fit ensure precise mating with mating components, preventing cross-threading and ensuring consistent clamping force. The integrated cotter pin slot and external hex drive design facilitate quick installation in automotive, agricultural, and industrial machinery where safety locknut performance is non-negotiable. This combination of materials, threading, and locking mechanism addresses the critical need for fail-safe fastening in dynamic load conditions.
Specification Summary & Compliance
This castle locknut features 7/8"-14 UNF fine threads with Class 2B thread fit tolerance, ensuring precise engagement with mating components. The nut meets Grade 5 strength classification requirements and is manufactured from zinc-plated steel with dimensions of 1 5/16" width and 49/64" height. The locking mechanism accommodates standard 3/16" cotter pins with minimum slot dimensions of 0.204" depth and 0.18" width. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, making it suitable for industrial applications requiring verified material safety and performance standards.
