S-95030A310 1"-8 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through cotter pin locking mechanism that prevents loosening under extreme dynamic loads
• Enhanced corrosion protection with zinc plating that extends service life in harsh industrial environments
• Reliable thread engagement with Class 2B fit ensuring consistent performance and easy assembly
• Quick installation and removal with standard external hex drive compatible with common wrench tools
• Positive mechanical locking via cotter pin slot (0.24" width, 0.241" depth) for 3/16" pins providing fail-safe security
• Optimized for heavy-duty applications with coarse UNC threads that resist cross-threading and handle high stress
• Environmental compliance assurance meeting both RoHS 3 and REACH standards for safe industrial use

Professional Applications & Engineering Value

This zinc-plated steel castle locknut delivers critical safety in applications where vibration-induced loosening could cause catastrophic failure. The 1"-8 UNC coarse thread design provides excellent engagement in materials where fine threads might strip, while the cotter pin locking mechanism creates a positive mechanical lock that outperforms friction-based alternatives. Engineered for automotive, construction, and heavy machinery applications, this external hex drive locknut offers reliable performance in wheel assemblies, steering components, and structural connections where safety is paramount. The combination of Class 2B thread fit and standardized dimensions ensures compatibility with existing industrial fastening systems while maintaining the security required for critical connections.

Specification Summary & Compliance

This castle locknut features 1"-8 UNC coarse threads with Class 2B fit for consistent thread engagement and right-hand thread direction. The nut measures 1-1/2" across flats with 55/64" height, designed to accommodate standard 3/16" cotter pins through slots with minimum dimensions of 0.24" width and 0.241" depth. Manufactured from zinc-plated steel for corrosion resistance, this locknut complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring suitability for regulated industrial applications.