The Wacker Neuson M20 Nut is a genuine OEM fastener designed for the PS4-7503HH, PS4-7503HF, PS4-11003HH, and PS4-11003HF series submersible pumps. Sourced directly from Wacker Neuson, this replacement nut meets the exact material and dimensional standards of the original hardware installed at the factory. It covers the full range of PS4 100mm/4-inch submersible pump configurations, including high-head and high-output variants across 220V, 400V, 440V, and 575V electrical specifications. When it's time to service or reassemble your pump, having the correct OEM fastener on hand keeps the job moving without compromise.
Key Features
- Genuine OEM Hardware Grade — Manufactured to the exact M20 thread pitch, hardness, and material specification used in original Wacker Neuson PS4 submersible pump assemblies, ensuring proper torque retention and corrosion resistance in wet environments.
- Drop-In Fastener Replacement — Threaded to factory M20 specification, this nut seats and torques directly onto existing pump hardware without reworking mating components.
- Broad PS4 Series Coverage — Compatible with PS4-7503HH, PS4-7503HF, PS4-11003HH, and PS4-11003HF submersible pumps across multiple voltage configurations (220V, 400V, 440V, and 575V).
- Maintains Structural Integrity Under Load — A correctly rated fastener holds pump components firmly under continuous submersed operation; an undersized or worn nut risks loosening, misalignment, or seal failure during high-output pumping cycles.
- Critical Fastener for Wet-Environment Assemblies — Using the correct OEM-specified nut on a submersible pump is essential to maintaining watertight clamping force on seals and housing joints — incorrect substitutions can compromise pump integrity.
The M20 Nut is a metric fastener used to secure structural and mechanical connections within the PS4 submersible pump assembly. In a submersible pump application, fasteners like this nut are responsible for maintaining the clamping force that holds housing sections, motor mounts, and seal carriers together under continuous immersion and hydraulic pressure. When a fastener stretches, corrodes, or is lost during service, replacing it with a correctly rated OEM equivalent is essential — an incorrect substitute can allow joint movement that leads to seal leakage, vibration damage, or motor housing misalignment over time.
Part Details
| Part Number | 5000150749 |
|---|---|
| Old Part Number | 0150749 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | M20 Nut |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PS4-7503HH | PS47503HH | 5000008856, 5000008857, 5000009147, 5000009148, 5000008855, 5000008858, 5000008859, 5000008860, 5000009149, 5000009204 |
| PS4-7503HF | PS47503HF | 5000008862, 5000008863, 5000008866, 5000009150, 5000009151, 5000009206, 5000008861, 5000008864, 5000008865, 5000009152 |
| PS4-11003HH | PS411003HH | 5000008868, 5000008876, 5000009153, 5000009154, 5000009208, 5000008867, 5000008869, 5000008870, 5000008877, 5000009155 |
| PS4-1003HF | PS411003HF | 5000008872, 5000008878, 5000009156, 5000009157, 5000009210, 5000008871, 5000008873, 5000008874, 5000008879, 5000009158 |
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.
Wacker Neuson