A Sight Gauge Stop Flange Nut features a built-in flange that acts like a washer, distributing the load more evenly and preventing galling on the mating surface. It has a serrated edge on the flange. These sharp teeth bite into the mating surface, creating a friction lock that resists even the most persistent attempts at loosening.Attributes:• Bites into the mating surface for a secure friction lock• Manufactured to precise specifications and is built for durability and reliabilityApplications:A Sight Gauge Stop Flange Nut is used to securely fasten threaded components of sight gauge assembly, providing exceptional resistance to loosening, vibration, and misalignment, because of its integrated flange and serrated teeth