S-95030A110 1/4"-20 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 demanding environments
• Reliable thread engagement with Class 2B fit ensuring consistent performance and easy assembly
• Quick installation and removal using standard 7/16" external hex drive compatible with common tools
• Positive mechanical locking via 1/16" cotter pin slot for fail-safe fastening in critical applications
• Industry-standard compatibility with 1/4"-20 UNC coarse threads for broad application across equipment and machinery
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This zinc-plated steel castle locknut delivers critical vibration resistance where safety and reliability are paramount. The cotter pin locking mechanism provides permanent mechanical security that outperforms friction-based locking methods, making it ideal for industrial machinery, automotive assemblies, and agricultural equipment subject to constant vibration and dynamic loads. The UNC coarse thread design ensures rapid installation while maintaining strength, while the zinc plating offers sacrificial corrosion protection in harsh environments. Engineered with precise slot dimensions (0.072" depth × 0.07" width) for reliable cotter pin retention, this locknut eliminates the risk of catastrophic fastener failure in critical applications.

Specification Summary & Compliance

This 1/4"-20 UNC coarse thread castle locknut features Class 2B thread fit for consistent engagement and assembly efficiency. Manufactured to standard external hex drive specifications with 7/16" width and 7/32" height, it accommodates 1/16" diameter cotter pins for positive locking. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial fastener applications.