S-95307A808 3/8"-24 MS21042L-6 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread locking technology that maintains clamp force in high-stress environments
• Enhanced corrosion protection with cadmium yellow-chromate plating that withstands harsh industrial conditions
• Precision thread fit with Class 3B tolerance ensuring reliable engagement and reduced risk of cross-threading
• Integrated flange design eliminates need for separate washers while providing superior load distribution
• Pre-lubricated installation reduces assembly time and prevents galling during torque application
• MS21042L-6 certification guarantees compliance with rigorous aerospace and industrial standards
• External hex drive allows for standard wrench access and high torque capability in confined spaces

Professional Applications & Engineering Value

This 3/8"-24 UNF flange lock nut delivers critical vibration resistance where fastener failure is not an option. The distorted thread locking mechanism creates permanent friction that prevents loosening under extreme dynamic loads, making it ideal for aerospace assemblies, heavy machinery, and automotive applications. The cadmium yellow-chromate plated steel construction provides sacrificial corrosion protection while maintaining electrical conductivity. The integrated flange design distributes clamping force over a wider surface area (0.62" diameter), reducing stress concentrations and preventing damage to connected materials. With built-in lubricant and Class 3B thread precision, this nut ensures consistent installation torque and reliable performance in critical vibration-prone environments.

Specification Summary & Compliance

This flange lock nut meets MS21042L-6 specifications with 3/8"-24 UNF fine threads and Class 3B thread fit for precision engagement. The external hex drive (7/16" width) and right-hand threading follow industry standards, while the 0.62" flange diameter and 0.04" thickness provide optimal load distribution. Manufactured from cadmium yellow-chromate plated steel, this component complies with industrial requirements for corrosion resistance and durability in demanding applications.