The Wacker Neuson is a genuine OEM Tapping Screw M4X16 designed for the PSTF3750 and PSTF2400 series submersible pumps. Sourced directly from Wacker Neuson, this fastener matches the exact thread form, head profile, and material specification of the original hardware installed at the factory. It is confirmed to fit the PSTF3750 (220V/60Hz, 1hp) and PSTF2400 models, making it a straightforward like-for-like replacement. When securing pump housings and internal assemblies, using the correct OEM fastener ensures proper clamping load and a sealed, reliable build.
Key Features
- Genuine OEM Thread Integrity — Manufactured to the exact M4X16 thread specification, ensuring full thread engagement without the risk of cross-threading or stripped seats that can result from non-spec fasteners.
- Direct Housing Replacement — Drops in as a direct swap for the original tapping screw, reinstalling with standard tooling and no rework to the mounting points.
- Confirmed PSTF Series Fitment — Verified for the PSTF3750 and PSTF2400 submersible pump models, covering both the 220V/60Hz 1hp variant and the base PSTF2400 configuration.
- Maintains Pump Housing Integrity — A correctly torqued, properly threaded fastener keeps pump housing sections aligned and sealed, preventing water ingress into protected cavities and maintaining full pump output.
- Corrosion-Resistant Hardware — Built for the wet, submerged environment of a PS-series submersible pump, where fastener corrosion can lead to seized or stripped fixings during future service.
A tapping screw cuts or forms its own mating thread as it is driven into a pre-drilled or unthreaded hole, creating a secure mechanical connection without a separate nut. In submersible pump assemblies, these fasteners are commonly used to secure housing panels, cable entry points, and internal component brackets. When a tapping screw fails — through corrosion, stripping, or breakage — the clamped joint can loosen, allowing water to migrate into areas of the pump that must remain sealed and compromising the structural integrity of the assembly during operation.
Part Details
| Part Number | 5000178374 |
|---|---|
| Old Part Number | 0178374 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Tapping Screw M4X16 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PSTF3 750 Sub. Pump, 220V/60hz, 1hp, 33' Cord, 4.7A | PSTF3750 | 5000620338, 5000620441 |
| PSTF2 400 | PSTF2400 | 5000620435 |
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.
