A Vulcan Hart 00-498565-00001 Hex Nut with External Tooth Lock Washer keeps threaded parts tightly joined to resist loosening during regular use.
The hex nut with external tooth lock washer secures connected grill and griddle components while the external tooth lock washer resists loosening from vibration and repeated equipment use. Its 1/4-20 threading and Keps-style integrated design matter because they provide a stable fit, maintain clamping force and support consistent alignment during operation.
The hex nut with external tooth lock washer may need replacement if components start shifting, rattling or failing to stay tightly fastened during grill or griddle operation. Physical signs can include worn threads, stripped corners, corrosion or a weakened lock washer and environmental signs may include grease buildup, heat exposure or moisture that could reduce fastening reliability.
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