Pentair Stainless Steel Nut 2-Pack 5/16" for Booster Pump | LA125
Pentair
SKU: LA125
Pentair LA125 Nut Set (2-Pack) for Booster Pump Hardware
The Pentair LA125 is an OEM stainless steel nut set used on Pentair booster pump assemblies. These nuts are commonly used to secure booster pump hardware (such as bracket/volute mounting points) and are a direct replacement when original nuts are missing, corroded, or damaged during service.
Key Details
- Manufacturer: Pentair
- Part Number: LA125
- Includes: 2 nuts (2-pack)
- Thread Size: 5/16"-18
- Material: Stainless steel
- Application: Booster pump mounting/assembly hardware
Common Applications
- Pentair Universal Booster Pump assemblies that use 5/16"-18 mounting nuts
- Selected Pentair/Polaris booster pump configurations that use the same 5/16"-18 hardware at the volute/bracket mounting points
What This Part Does
- Provides secure fastening for booster pump components where 5/16"-18 threaded hardware is specified.
- Helps maintain proper alignment and vibration resistance when the pump is running.
- Stainless construction helps resist corrosion in outdoor pool equipment environments.
When to Replace
- Nut is missing after service or disassembly
- Threads are stripped or will not tighten securely
- Corrosion or seizure prevents proper removal/installation
- Hardware loosens repeatedly due to worn fastening components
Installation Notes
- Disconnect power at the breaker before servicing any pump.
- Start threads by hand to prevent cross-threading.
- Tighten evenly and securely, but do not overtighten against plastic components.
- If you are replacing multiple fasteners, tighten in an alternating pattern to keep parts seated evenly.
Maintenance Tip
If fasteners are corroded or seized, inspect nearby brackets and mounting surfaces for rust staining or vibration wear. Replacing worn hardware early helps prevent misalignment and premature component failure.
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Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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