Heavy Hex Lock Nut: Flex Top, 1/4-20, Grade 2 Steel, Bright/Uncoated MPN:20FKC-420

The 1/4-20 UNC grade 2 heavy hex lock nut is the perfect solution for securing bolts and nuts in your machinery or tools with self-locking features, enabling a secure hold without needing serrations or lockwires. With its durable carbon steel construction, the hexagonal shape allows for strong tightening or loosening without stripping of the threads while providing uniform load distribution. The expanding flex top eliminates the risk of galling and over-tightening to ensure a vibration proof option. The knurled body makes it easy to grip during adjustments, while the 1/4-20 UNC thread size ensures compatibility with standard hardware assortments and assemblies. It is suitable for various machinery or tools requiring heavy-duty securing needs and promotes longevity in use.