Pentair 35402-0074Z Brass Wing Nut (1/4″-20) for Sta-Rite / Pentair D.E. Filters
The Pentair 35402-0074Z is an OEM brass wing nut with 1/4″-20 threads used on select Pentair Sta-Rite D.E. filter assemblies. It is commonly used on the tie-rod/manifold hardware to secure internal filter components. Replacing a worn, stripped, or missing wing nut helps keep the manifold assembly properly clamped for dependable filtration and easier future service.
Key Details
- Part number: 35402-0074Z (also referenced as 35402-0074)
- Thread size: 1/4″-20
- Material: Brass
- Type: Wing nut (tool-free tightening/loosening)
Common Compatibility
- Pentair Sta-Rite DEP-Series D.E. filters
- Pentair / Sta-Rite System:3 D.E. filters (select models)
- Select SwimQuip / Pentair D.E. filter assemblies that use a 1/4″-20 wing nut on the tie rod
Verify fit by checking your filter model and confirming the wing nut thread size on your existing hardware (1/4″-20).
When to Replace
- Wing nut threads are stripped or won’t tighten securely
- Nut is seized/corroded and difficult to remove during cleaning
- Nut is missing after service
- Visible deformation that prevents even clamping
Installation Notes
- Shut off the pump and relieve filter pressure before opening the filter.
- Hand-tighten only—do not over-tighten, which can stress tie rods or internal components.
- If tightening feels uneven, inspect the tie rod, manifold, and sealing surfaces for damage or misalignment.
- After reassembly, restart the system and check for leaks and proper pressure.
Related Products (Aqua Pool Supply)
- Sta-Rite DEP Filter O-Rings & Gaskets (Search)
- System:3 D.E. Filter O-Rings & Seals (Search)
- Sta-Rite DEP Air Relief / Pressure Parts (Search)
- Sta-Rite DEP Manifold & Internal Hardware (Search)
Maintenance Tips
- Always bleed off air and pressure before opening the filter to protect components and threads.
- Rinse D.E. grids thoroughly during cleanings to reduce strain and keep pressures normal.
- If hardware is difficult to remove, address it during service—forcing parts can damage tie rods and manifolds.
- Inspect internal seals and O-rings during each tear-down; replacing worn seals helps prevent leaks and air intrusion.
