Fleck Screw, 10-24x1/2 (Plug Retainer)

This Fleck screw, sized 10-24 x 1/2 inch and used as an end plug retainer, is a genuine Pentair replacement fastener for Fleck control valves. Despite its modest size, this screw plays a focused and important role in holding the end plug securely in position within the valve body. A small fastener like this is easy to overlook during a rebuild, yet it is essential to maintaining a tight, leak-free valve that directs water exactly where it should go.

The end plug seals one end of the valve's internal bore, and the retainer screw keeps it firmly seated against the internal water pressure present during operation. If the retainer screw is loose, missing, or the wrong size, the end plug can shift under pressure, which may lead to external leaks, internal bypass, or improper sealing between flow passages. Using the correct fastener ensures the plug stays securely put and the valve continues to route water reliably through each stage of its cycle.

• Genuine Fleck/Pentair replacement hardware
• Specification: screw, 10-24 x 1/2 inch
• Function: end plug retainer
• Holds the end plug securely against internal water pressure
• Correct thread pitch and length for a proper, secure fit
• A useful spare for valve rebuilds and routine service

Keep One in Your Service Kit

Because small fasteners are easy to lose during a valve teardown, keeping a spare end plug retainer screw on hand helps prevent frustrating delays in the middle of a repair. Confirm your Fleck valve model before ordering to ensure the correct thread match for your control head, since the wrong thread can strip the hole or fail to hold. Pairing this screw with fresh seals and a light application of valve-safe lubricant when servicing helps you complete a clean, leak-free rebuild that keeps your softener or filter running dependably and quietly for years to come. Treating this small screw as a standard part of your seal-and-fastener kit ensures a 10-24 retainer is always available when you reach the reassembly stage, keeping the end plug secure and the valve leak-free without an extra trip for parts. Genuine hardware and fresh seals together are the foundation of a clean, professional rebuild that keeps your softener or filter cycling reliably for many seasons of use.