S-95030A280 7/8"-9 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through cotter pin locking mechanism that prevents loosening in high-stress applications
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh environments
• Quick installation and removal with standard external hex drive design compatible with common wrench 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 cross-threading and provide strong holding power
• Secure locking performance with precisely machined slots accommodating standard 5/32" cotter pins for positive mechanical locking
• Regulatory compliance assurance meeting both REACH and RoHS 3 standards for environmental and workplace safety

Professional Applications & Engineering Value

This 7/8"-9 UNC castle locknut delivers critical security in demanding mechanical systems where vibration-induced loosening poses significant operational risks. The zinc-plated steel construction provides essential corrosion resistance while maintaining the high tensile strength required for heavy machinery, agricultural equipment, and automotive applications. The cotter pin locking mechanism offers a fail-safe mechanical locking solution that surpasses friction-based alternatives, ensuring maintained clamp load even under extreme vibration conditions. With its coarse thread spacing and Class 2B thread fit, this industrial-grade component resists cross-threading during assembly while providing reliable performance in high-vibration environments such as power transmission systems, construction equipment, and transportation infrastructure where vibration resistance is paramount to operational safety and equipment longevity.

Specification Summary & Compliance

This heavy-duty locknut features precise Class 2B thread fit with 7/8"-9 UNC coarse threads and right-hand thread direction. The component meets standardized dimensions including 1 5/16" width and 3/4" height with cotter pin slots machined to minimum 0.204" depth and 0.18" width specifications, accommodating standard 5/32" cotter pins. Manufactured in compliance with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring regulatory compliance for industrial applications worldwide.