The Wacker Neuson 5200020997 Nut is a genuine OEM fastener designed for APT4T and APT4S series submersible pumps. As a direct OEM replacement, this nut is manufactured to the exact specifications called out in Wacker Neuson's parts documentation, ensuring correct torque retention and secure component fastening across all covered configurations. Verified fitment spans both standard and Cold Weather variants of the APT4T and APT4S, including Surge Brake and Electric Brake pump configurations. When you need the right hardware the first time, sourcing the genuine OEM part eliminates guesswork and keeps your pump assembly properly secured.
Key Features
- Genuine OEM Fastener Grade — Manufactured to Wacker Neuson's exact thread specification and material standard, ensuring correct clamping load and resistance to vibration-induced loosening in pump applications.
- Drop-In Installation — Matches the original thread form and hex profile exactly, so it seats and torques down without any rework or fitting adjustments.
- Broad APT4T and APT4S Fitment — Compatible with APT4T Surge Brake, APT4T Electric Brake, APT4S Pump with Skid, and their respective Cold Weather variants, covering the full APT4 submersible pump family.
- Fastener Integrity Protects Pump Operation — A correctly torqued nut keeps critical pump components properly clamped and aligned; a worn, stripped, or missing nut can lead to component movement, seal failure, or pump damage during operation.
A nut is a threaded fastener used to secure bolts, studs, or other hardware within an assembly by applying clamping force when tightened. In submersible pump applications like the APT4T and APT4S, fasteners are subjected to constant vibration, moisture, and mechanical load — conditions that demand hardware built to the correct thread class and material specification. Using a mismatched or worn nut risks under-clamping critical joints, which can allow movement between components and accelerate wear or leakage elsewhere in the pump assembly.
Part Details
| Part Number | 5200020997 |
|---|---|
| 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.
