S-95030A350 1 1/4"-7 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through cotter pin locking mechanism for enhanced safety in high-stress applications
• Excellent corrosion protection with zinc-plated steel construction extending service life in harsh environments
• Quick installation and removal with standard external hex drive design compatible with common tools
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and easy assembly
• Optimized for heavy-duty applications featuring coarse UNC threads that resist loosening under dynamic loads
• Secure cotter pin integration with precisely machined slot (0.297" depth, 0.31" width) for 9/32" pin compatibility
• Environmental compliance assurance meeting both RoHS 3 and REACH standards for responsible manufacturing

Professional Applications & Engineering Value

This heavy-duty 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 structural integrity required for industrial machinery, agricultural equipment, and automotive assemblies. The 1 1/4"-7 UNC coarse thread design ensures rapid installation and superior resistance to dynamic loads, while the cotter pin locking mechanism creates a positive mechanical lock that eliminates the need for constant retightening in high-vibration environments. The external hex drive allows for standard wrench access, streamlining maintenance procedures in confined spaces where reliability is paramount for operational safety and equipment longevity.

Specification Summary & Compliance

This castle locknut features Class 2B thread fit tolerance for consistent engagement and 1 1/4"-7 UNC coarse threads manufactured to standard specifications. The nut measures 1 7/8" across flats with a height of 1 3/32", designed to accommodate standard 9/32" cotter pins through precisely machined slots (0.297" min. depth, 0.31" min. width). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring responsible manufacturing practices and material safety.