Pentair Sta-Rite/PacFab Impeller Lock Screw (355389Z)

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This impeller lock screw is designed for Sta-Rite and PacFab pump assemblies where the impeller must be secured correctly during operation.Using the proper screw is important becau se impeller hardware is exposed to vibration, rotation, and wet-end stress. A damaged or incorrect fastener can affect pump reliability and make future service more difficult. Secures the impeller in compatible pump assemblies Useful during impeller replacement or wet-end rebuilds Model-specific hardware helps prevent fitment problems Replace worn or missing hardware with the correct part number rather than substituting generic screws that may not hold or seat properly. Show more