The Wacker Neuson 5200020287 Nut is a genuine OEM fastener designed for the APT4T and APT4S submersible pump series. As a direct factory replacement, this nut is manufactured to the exact material and dimensional specifications required by Wacker Neuson, ensuring a proper, secure fit in every application. It is confirmed compatible with APT4T Surge Brake, APT4T Electric Brake, APT4T Cold Weather, APT4S with Skid, and APT4S Cold Weather pump configurations. Keeping the correct OEM hardware on hand means your pump assembly stays tight and operational when you need it most.
Key Features
- Genuine OEM Fastener Grade — Manufactured to Wacker Neuson's exact material and thread specification, ensuring correct clamping torque and secure retention in the pump assembly.
- Direct Drop-In Replacement — Threaded to the same specification as the original hardware, so installation is straightforward with standard tooling and no rework needed.
- Broad APT4 Series Compatibility — Fits APT4T and APT4S pump variants including Surge Brake, Electric Brake, and Cold Weather configurations.
- Preserves Assembly Integrity — A properly torqued OEM nut maintains correct component alignment and clamping load; an incorrect or worn fastener can allow loosening under vibration and lead to assembly failure.
- Verified Part Number — Sourced directly under Wacker Neuson part number 5200020287 so you can order with confidence that you are receiving the correct hardware.
A nut in a pump assembly serves as the primary threaded fastener that clamps and secures key components in place, maintaining the structural integrity of the assembly under operating loads and vibration. In submersible pump applications like the APT4T and APT4S series, fasteners are exposed to wet, high-vibration environments where incorrect or degraded hardware can work loose over time, causing misalignment, leaks, or component damage. Using the correct OEM nut ensures that torque specifications are met and that the assembly performs as designed throughout its service life.
Part Details
| Part Number | 5200020287 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Nut |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
