23518765
Lockwasher 5/16 Inch Internal Tooth Steel Zinc Plated
Detroit Diesel

The lockwasher with internal teeth is an essential fastening component in heavy-duty truck assemblies, providing resistance against loosening caused by vibrations or dynamic loads. With a 5/16-inch inner diameter, it fits securely onto standard threaded fasteners. Its zinc-plated steel construction ensures corrosion resistance, extending its service life even in harsh environments. The internal teeth bite into the mating surface, creating a secure grip that maintains preload and prevents rotation or back-off of nuts and bolts. This feature is particularly valuable in critical applications such as suspension, drivetrain, or steering systems. Proper installation involves ensuring the teeth engage fully with the mating surface, which enhances the overall stability of the connection. Regular inspection and replacement of worn or damaged lockwashers are recommended for maintaining system integrity. Source One Parts Center supplies this lockwasher as part of their fastener inventory, emphasizing quality and dependable fastening solutions.