The Wacker Neuson 5100028407 Nut is a genuine OEM component designed for the PS2, PS3, and PS4 series submersible pumps. As a factory-sourced part, it meets the exact material and dimensional standards specified for these pumps across a wide range of voltage configurations, horsepower ratings, and discharge sizes. Fitment covers PS2-3703, PS3-3703, PS3-5503, PS4-3703, PS4-5503, PS4-7503HH, PS4-7503HF, PS4-11003HH, and PS4-11003HF models, among others. Verifying your model number before ordering ensures a correct, trouble-free installation.
Key Features
- Genuine OEM Material Integrity — Manufactured to the same hardness and threading specification as the original, ensuring the nut seats and torques correctly without stripping or loosening under pump operating loads.
- Direct Bolt-On Replacement — Matches the original thread pitch and drive type, so it installs in the same position without any reworking of mating hardware.
- Broad PS Series Fitment — Confirmed compatibility across the PS2, PS3, and PS4 submersible pump families in both 220V and 440V configurations and across multiple horsepower ratings from 5hp through 15hp.
- Maintains Pump Structural Integrity — A correctly torqued, undamaged nut keeps critical pump components secured under continuous submersed operation; a worn or cross-threaded nut can allow components to shift, leading to seal failure or pump damage.
- Correct Fastener for Wet-Environment Service — Using the specified OEM nut in a submersible application is important for corrosion compatibility — substituting a non-spec fastener in a continuously wet environment risks accelerated degradation and loosening.
A nut in a submersible pump assembly serves as a critical fastener that clamps and secures pump components against the mechanical vibration and hydraulic forces generated during operation. In a submersed environment, fastener integrity is especially important because corrosion, galvanic reactions, or improper thread engagement can cause a nut to loosen or seize over time. A failed or missing fastener can allow internal components to shift out of alignment, leading to seal leaks, impeller damage, or motor flooding — making correct replacement with the specified part essential to keeping the pump running reliably.
Part Details
| Part Number | 5100028407 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Nut |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PS3-3703 | PS33703 | 5000008833, 5000008832, 5000009136, 5000009135 |
| PS2-3703 | PS23703 | 5000008826 |
| PS4-3703 | PS43703 | 5000008839, 5000008838 |
| PS4 11003HH Sub. Pump, 220V/60hz, 15hp, 38A | PS411003HH | 5000009153, 5000009154, 5000008876, 5000008868, 5000009208 |
| PS4-5503 | PS45503 | 5000008850, 5000009144, 5000009145, 5000008851, 5000009202 |
| PS4-1003HF | PS411003HF | 5000008872, 5000008878, 5000009210 |
| PS3 5503 Sub. Pump, 220V/60hz, 7.5hp, 19.5A | PS35503 | 5000009141, 5000008844, 5000008845, 5000009142, 5000009200 |
| PS4-7503HH | PS47503HH | 5000008856, 5000009148, 5000008857, 5000009147 |
| PS4-7503HF | PS47503HF | 5000008863, 5000008862, 5000009206 |
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.
