S-97190A040 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 integrated 3/16" cotter pin slot for reliable locking in high-motion applications
- Enhanced durability and corrosion protection with zinc-plated steel construction in demanding industrial environments
- High-strength performance meeting Grade 5 specifications for heavy-duty mechanical assemblies
- Precise thread engagement with 1"-8 UNC coarse threading and Class 2B fit ensuring easy installation and secure fastening
- Standard external hex drive for compatibility with common wrench tools and straightforward installation
- Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries
- Optimized slot dimensions (0.241" depth, 0.24" width) ensuring proper cotter pin retention and mechanical security
Professional Applications & Engineering Value
This Grade 5 castle locknut delivers critical vibration-resistant fastening for industrial machinery, agricultural equipment, and automotive systems where dynamic loads threaten standard fastener integrity. The zinc-plated steel construction provides essential corrosion resistance in harsh operating environments, while the 1"-8 UNC coarse threading ensures rapid assembly and disassembly without cross-threading risks. The integrated 3/16" cotter pin slot creates a positive mechanical lock that prevents rotational loosening under extreme vibration, eliminating costly downtime from fastener failure. Engineered for heavy-duty applications requiring reliable, long-term fastening solutions, this castellated nut maintains clamping force where conventional nuts would compromise system safety.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2B thread fit and UNC coarse thread specifications for consistent performance. The nut features a standard 1-1/2" width and 55/64" height with optimized slot dimensions for 3/16" cotter pins. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.
