S-95030A230 9/16"-18 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-plated steel construction for extended service life in harsh industrial environments
• Precise thread engagement with Class 2B thread fit ensuring reliable fastening and consistent performance
• Easy installation and removal with standard 7/8" external hex profile compatible with common wrench tools
• Secure locking capability featuring 7/64" cotter pin compatibility with optimized slot dimensions for reliable pin retention
• Regulatory compliance assurance meeting both REACH and RoHS 3 standards for safe industrial use
• Fine thread advantage with 9/16"-18 UNF spacing providing better tension control and vibration resistance than coarse threads

Professional Applications & Engineering Value

This zinc-plated steel castle locknut delivers critical safety and reliability in high-vibration applications where fastener failure is not an option. The cotter pin locking mechanism provides permanent security against rotational loosening, making it ideal for industrial machinery, automotive assemblies, and agricultural equipment subjected to constant motion and shock loads. The UNF fine thread configuration offers superior clamping force distribution and resistance to vibrational loosening compared to standard coarse threads. Combined with the external hex drive and Class 2B thread fit, this locknut ensures precise installation torque values and maintains integrity in demanding operating conditions where conventional nuts would fail.

Specification Summary & Compliance

This castle locknut features precision 9/16"-18 UNF fine threads with Class 2B thread fit for optimal engagement and consistent performance. The standard 7/8" hex profile accommodates standard wrenching tools, while the cotter pin slot is engineered with 0.163" minimum depth and 0.15" minimum width to securely accommodate 7/64" diameter cotter pins. The product is manufactured in compliance with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring regulatory compliance for industrial applications worldwide.