S-92501A445 9/16"-18 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through precision distorted top lock technology, ensuring reliable performance in high-stress environments
• Enhanced corrosion protection with cadmium-plated steel, extending service life in harsh industrial conditions
• High-strength durability meeting ASTM Grade C standards, providing dependable load-bearing capacity for heavy-duty applications
• Secure and precise fastening with Class 2B thread fit, minimizing the risk of loosening under dynamic loads
• Easy installation and removal using standard external hex drive, compatible with common tools for efficient maintenance
• Fine thread design (UNF 9/16"-18) offering improved clamping force and better resistance to vibrational loosening compared to coarse threads
• Consistent dimensional accuracy with 7/8" width and 31/64" height, ensuring compatibility and repeatable performance in assembly lines

Professional Applications & Engineering Value

This 9/16"-18 UNF locknut is engineered to address critical challenges in industrial settings where vibration and dynamic loads compromise fastener integrity. The distorted thread locking mechanism at the top creates consistent interference, effectively resisting loosening without requiring additional locking elements. Made from cadmium-plated steel, it provides excellent corrosion resistance, making it ideal for outdoor machinery, automotive assemblies, and heavy equipment subjected to moisture and chemicals. The fine UNF thread and Class 2B fit ensure tight tolerances, reducing the risk of thread stripping and enhancing clamp load distribution. These features make it a reliable choice for applications demanding long-term fastening security and minimal maintenance, such as in construction, aerospace, and manufacturing sectors.

Specification Summary & Compliance

This locknut adheres to UNF fine thread standards with a size of 9/16"-18 and Class 2B thread fit for precise engagement. It meets ASTM Grade C specifications, ensuring consistent mechanical properties and strength. The external hex drive design complies with industry standards for tool compatibility. Dimensions include a width of 7/8" and height of 31/64", manufactured to tight tolerances for reliable performance. The product is compliant with RoHS and REACH environmental regulations, supporting safe and sustainable industrial use.