A Wilbur Curtis 3375001987 Lock Nut keeps sprayhead components firmly in place to maintain secure assembly during regular use.
The lock nut secures the sprayhead in place so it remains properly aligned and tight during operation. Its hex shape and 5/8" thread size provide a dependable fit that resists loosening from vibration and repeated use, which is important for consistent spray performance and leak prevention.
The lock nut may need replacement if the sprayhead becomes loose, shifts out of position or the equipment develops inconsistent spray coverage or minor leaks around the mounting area. Physical signs can include worn or stripped threads, rounding on the hex surfaces, corrosion, mineral buildup or other damage that could prevent it from maintaining a secure hold.
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