S-90621A047 3/4"-10 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through steel insert locking mechanism that maintains clamping force in high-stress applications
• Enhanced torque application with extra wide hex profile providing better grip and reduced tool slippage during installation
• Exceptional strength and durability from Grade 8 steel construction, capable of withstanding heavy loads and extreme conditions
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and reduced cross-threading risks
• Easy installation and removal with standard external hex drive design compatible with common industrial tools
• Environmental compliance meeting RoHS 3 standards for safe use in regulated industries and applications
• Optimized for coarse threading with UNC 3/4"-10 specification providing faster assembly and better performance in dirty environments

Professional Applications & Engineering Value

This Grade 8 steel locknut delivers critical engineering solutions for industrial applications where vibration resistance and long-term reliability are paramount. The steel insert locking mechanism creates permanent friction that prevents loosening under dynamic loads, making it ideal for heavy machinery, construction equipment, and automotive assemblies. The extra wide hex profile distributes installation torque more effectively, reducing surface damage and allowing for higher clamping forces. With UNC coarse threads and Class 2B thread fit, this locknut provides excellent engagement in applications where debris accumulation is a concern, while the external hex drive ensures compatibility with standard wrenching tools for efficient maintenance and assembly operations in industrial settings.

Specification Summary & Compliance

This heavy-duty locknut features precision 3/4"-10 UNC coarse threads with Class 2B thread fit tolerance for reliable performance. Manufactured from high-strength Grade 8 steel with dimensions of 1-1/4" width and 7/8" height, the nut complies with RoHS 3 (2015/863/EU) environmental standards and is designed for right-hand thread applications with external hex drive configuration, ensuring broad compatibility with industrial fastening systems and maintenance protocols.