S-94831A030 5/16"-18 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance with locking serrations that prevent loosening under dynamic loads
• Enhanced load distribution thanks to the 43/64" flange diameter that reduces surface pressure
• Durable corrosion protection through zinc-plated steel construction for extended service life
• Quick installation with standard external hex drive and coarse UNC threads for efficient assembly
• Reliable thread engagement ensured by Class 2B fit for consistent fastening performance
• Environmental compliance meeting REACH and RoHS 3 standards for safe industrial use
• Universal compatibility with right-hand thread direction and standard hex profile for broad application

Professional Applications & Engineering Value

This zinc-plated steel flange locknut addresses critical vibration-induced failure points in industrial equipment and machinery. The integrated flange design eliminates the need for separate washers while providing superior clamping force distribution, preventing surface damage to assembled components. The anti-loosening serrations bite into mating surfaces to maintain clamp load under continuous vibration, making it ideal for automotive assemblies, heavy machinery, and electrical enclosures where UNC coarse threads enable rapid installation in high-volume production environments. The combination of Class 2B thread fit and external hex drive ensures consistent torque application and reliable performance in demanding applications.

Specification Summary & Compliance

This flange locknut features precision 5/16"-18 UNC coarse threads with Class 2B thread fit for reliable engagement. The nut meets REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) compliance standards, ensuring environmental safety in industrial applications. Manufacturing specifications include a 43/64" flange diameter, 0.1" flange thickness, and standard hex nut profile with external hex drive for compatibility with common tools.