The Wacker Neuson Acorn Nut M20 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 acorn nut is manufactured to the exact thread pitch and dimensional tolerances required for correct assembly on these high-capacity 4-inch electric submersible pump units. It fits across the full voltage range of the PS4 series — including 220V, 440V, 575V/60Hz, and 400V/50Hz configurations — making it the right choice whether you are servicing a pump built for North American or international electrical standards. When you need a direct OEM replacement with no guesswork on fitment, is the confirmed part.
Key Features
- Genuine OEM Thread Integrity — Manufactured to Wacker Neuson's specified M20 thread form, ensuring full engagement and correct torque retention on pump housing fastening points.
- Closed-End Cap Design — The acorn profile shields the exposed thread end from moisture, debris, and corrosion — critical for submersible pump hardware operating in wet or submerged environments.
- Broad PS4 Series Coverage — Confirmed fitment across PS4-7503HH, PS4-7503HF, PS4-11003HH, and PS4-11003HF models in 220V, 440V, 575V, and 400V configurations.
- Structural Fastening Confidence — A correctly seated acorn nut maintains housing assembly integrity under the vibration and hydraulic pressure loads these high-output submersible pumps generate during continuous operation.
- Direct OEM Sourcing — As a genuine Wacker Neuson part, 5000150756 matches the original hardware specification exactly, with no ambiguity around sizing or material grade.
An acorn nut — also called a cap nut — is a closed-end hex nut with a domed cap that covers the protruding bolt or stud thread once fastened. On submersible pump assemblies, these nuts serve a dual purpose: they secure critical housing components and seal the exposed thread end against the water, grit, and chemical exposure inherent in dewatering applications. When an acorn nut is missing, damaged, or replaced with an incorrect size, it can compromise the clamping force of the joint and leave the thread stub vulnerable to corrosion, making future disassembly difficult and potentially compromising the structural integrity of the pump assembly over time.
Part Details
| Part Number | 5000150756 |
|---|---|
| Old Part Number | 0150756 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Acorn Nut M20 |
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.
