S-93591A200 5/16"-18 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through top-lock distorted thread technology that maintains secure fastening under extreme conditions
• Exceptional strength and durability with Grade 9 heavy-duty classification for demanding industrial applications
• Enhanced corrosion protection from cadmium-plated steel construction extending service life in harsh environments
• Reliable installation and removal with standard external hex drive compatible with common wrench tools
• Optimal thread engagement through UNC coarse threading and Class 2B fit ensuring consistent performance
• Right-hand thread design providing standard directional compatibility with most industrial equipment
• Precise dimensional specifications with 1/2" width and 21/64" height for accurate fit in assembly applications

Professional Applications & Engineering Value

This Grade 9 heavy-duty locknut delivers critical vibration resistance for industrial machinery, automotive assemblies, and construction equipment where secure fastening is paramount. The distorted thread top-lock mechanism creates consistent interference that prevents loosening under dynamic loads, eliminating the need for secondary locking devices. Manufactured from cadmium-plated steel, this locknut provides superior corrosion resistance while maintaining the high tensile strength required for heavy-duty applications. The UNC coarse threading and Class 2B thread fit ensure reliable engagement even in challenging environments where vibration and thermal cycling would compromise standard fasteners. The external hex drive design allows for efficient installation using common tools, reducing assembly time while delivering maximum reliability in critical connections.

Specification Summary & Compliance

This locknut features 5/16"-18 UNC coarse threading with Class 2B thread fit for precise dimensional accuracy and reliable performance. The manufacturing complies with industry standards for heavy-duty locknuts, including appropriate material specifications for cadmium-plated steel construction. The product meets relevant industrial requirements for high-strength fasteners and is engineered to deliver consistent performance in demanding applications where vibration resistance and secure locking are essential.