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The Swimables Machined Nut 194997 / SW-26-997 is an aftermarket replacement crafted to align with the original Pentair clamp nut specifications used on FNS Plus, Quad DE, Clean & Clear Plus, and FullFloXF filtration systems. Constructed from corrosion-resistant material, it delivers dependable tightening force to support proper tank sealing and maintain stable operating pressure. The nut features a 5/16-24 fine-thread pattern that matches the original clamp bolt, along with a 7/8-inch wrench size for hassle-free installation or removal during service. Ideal for rebuilding clamp assemblies or performing routine maintenance, this machined nut reinforces consistent, leak-free system performance.
Highlights
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Designed for Pentair Clamp Assemblies: Fits Pentair FNS Plus, Quad DE, Clean & Clear Plus, and FullFloXF filters by matching the functional profile of the original clamp nut.
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Correct 5/16-24 Threading: Uses the same fine-thread pattern found on Pentair clamp bolts, helping ensure smooth tightening and reliable compression.
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Easy 7/8 Inch Tool Access: Compatible with a standard 7/8 inch wrench, simplifying installation and streamlining routine service work.
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Corrosion-Resistant Build: Machined from durable materials that withstand chemicals, moisture, and weather exposure for long service life.
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Supports Leak-Free Operation: Provides even clamp pressure to help maintain tank integrity and stable internal system pressure.
Compatibility
- Pentair FNS Plus Filters: 180007, 180008, 180009
- Pentair Quad DE Filters: 188592, 188593, 188594
- Pentair Clean and Clear Plus Filters: 160310, 160340, 160301, 160332
- Pentair FullFloXF Filters
Note: This nut may be compatible with your , please refer to your systems owners manual to ensure compatibility.
Diagram

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