S-95922A112 5/16"-18 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through precision-engineered serrations that maintain locking force under dynamic loads
• Exceptional strength and durability with Grade 8 steel construction for heavy-duty applications
• Enhanced corrosion protection from black-phosphate coating that extends service life in demanding environments
• Reliable fastening performance with UNC coarse threads providing maximum holding power and easier installation
• Integrated flange design eliminates need for separate washers while distributing load over wider surface area
• Precision thread fit with Class 2B tolerance ensuring consistent engagement and reduced cross-threading risk
• External hex drive allows for standard wrench access and high torque application capabilities

Professional Applications & Engineering Value

This Grade 8 Black-Phosphate Steel Flange Lock Nut delivers critical engineering solutions for industrial applications where vibration-induced loosening compromises safety and performance. The serrated locking mechanism bites into mating surfaces, creating permanent resistance to rotational forces in machinery, automotive assemblies, and structural frameworks. The integrated flange provides superior load distribution, reducing surface pressure and preventing material deformation. With 5/16"-18 UNC coarse threads and Class 2B thread fit, this heavy-duty fastener ensures reliable performance in high-stress environments while the black-phosphate surface treatment offers enhanced corrosion resistance for extended service life in challenging conditions.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit and UNC coarse thread profile (5/16"-18). Features an 11/16" flange diameter with 0.04" thickness and standard hex profile for consistent tool engagement. Compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental responsibility and workplace safety. Right-hand thread direction and external hex drive style provide industry-standard installation compatibility across industrial applications.