Product Details
- Product type: Printed circuit board mounting screw replacement
- Brand: Zodiac
- Part number: R0512800
- Screw size: 4 by 1/4-inch
- Compatible system type: Select Zodiac AquaPure Ei Series electronic salt water chlorine generators
- Known compatible models: APURE35 and APURE35PLG
- Use: Helps secure the printed circuit board or related board mounting area in compatible AquaPure Ei systems
- Package contents: Confirm exact screw quantity on the seller listing before purchase
- Best use case: Replacing missing, worn, stripped, or damaged PCB mounting screws during AquaPure Ei repair
Compatibility and Buyer Check
Before ordering, confirm that your AquaPure Ei system manual calls for part number R0512800. This screw replacement is listed for select Zodiac AquaPure Ei electronic salt water chlorine generator models, including APURE35 and APURE35PLG.
Do not order by product image alone. Small screws can look very similar, but the screw length, thread style, head type, and mounting location can be different.
If you need another screw set for the same AquaPure Ei system, compare this item with the Zodiac R0512900 M3 by 12 mm screw replacement set. If the circuit board itself is damaged, review the Zodiac R0512100 power PCB assembly before replacing only the mounting screw.
What This Mounting Screw Does
This mounting screw helps hold the printed circuit board or related board section securely in place inside a compatible AquaPure Ei generator. A missing or damaged screw may leave the board loose, misaligned, or less secure during operation.
Replacing the screw may help restore proper board mounting, but it will not fix a failed PCB, power issue, display problem, low chlorine output, damaged wiring, or water chemistry issue.
Before You Order
Check these details before purchasing:
- Confirm the exact part number R0512800.
- Verify that your system model is APURE35, APURE35PLG, or another compatible AquaPure Ei model.
- Confirm that your repair requires a 4 by 1/4-inch PCB mounting screw.
- Compare the screw head, thread style, and length with your original screw.
- Inspect the board, mounting post, and screw hole for cracks, corrosion, or stripped plastic.
- If your issue is related to the control board area, check the Zodiac R0512300 TS control PCB assembly before ordering hardware only.
- If you are servicing nearby AquaPure Ei parts, the Zodiac R0511800 plug replacement and Zodiac R0512600 locking ring tool replacement may also be useful.
Installation Notes
Turn off power to the salt water chlorine generator and pool equipment before opening the control area or working near any electrical parts. If you are not comfortable working around pool equipment wiring, use a qualified pool technician.
Install the replacement screw in the same location as the original. Do not overtighten, cross-thread, or force the screw, because this can damage the mounting post, plastic housing, or circuit board area.
Before restoring power, confirm that the board is seated correctly, the screw is secure, and no wires are pinched or loose.
Maintenance Tips
To help avoid future screw and mounting issues:
- Keep the control area dry and protected.
- Replace stripped, rusted, or damaged screws during service.
- Use the correct screwdriver size to avoid damaging the screw head.
- Do not reuse screws that no longer tighten properly.
- Inspect mounting posts before installing new hardware.
- Check for moisture or corrosion inside the control area before assuming the screw is the only issue.










