The Wacker Neuson Socket Head Cap Screw is a genuine OEM fastener designed for the PDT2, PDT3, PDI2, and PDI3 series diaphragm trash pumps. As a direct OEM replacement, this screw is produced to the exact material and thread specifications called out in the original Wacker Neuson service documentation, ensuring a correct fit with no guesswork. It is compatible across both 50mm/2-inch and 75mm/3-inch diaphragm trash pump configurations in the PDT and PDI families, covering a broad range of A, B, and standard variants. Keeping critical fastener positions torqued to spec is essential on diaphragm pumps where housing integrity directly affects pump performance and fluid containment.
Key Features
- Genuine OEM Fastener Grade — Manufactured to Wacker Neuson's original material and thread specification, ensuring correct clamping force and corrosion resistance in pump housing applications.
- Hex Socket Drive for Torque Accuracy — The socket head profile allows controlled torque application with an Allen/hex key, critical for even clamping across pump housing mating surfaces.
- Broad PDT and PDI Series Coverage — Fits 50mm/2-inch and 75mm/3-inch diaphragm trash pump models across the PDT2, PDT2A, PDT2B, PDT3, PDT3A, PDI2, PDI2A, PDI3, and PDI3A families.
- Housing Integrity Where It Counts — A correctly specified cap screw maintains proper clamping load on pump housings and covers, preventing leaks and diaphragm misalignment during operation.
- Direct OEM Source Confidence — Sourced directly through Wacker Neuson's parts network, so the part number, thread pitch, and head dimensions match the original exactly.
Socket head cap screws in diaphragm trash pumps are structural fasteners that clamp pump housing sections, valve covers, and diaphragm assemblies together under consistent load. Because diaphragm pumps generate cyclic pressure with every stroke, the fasteners holding the housing must maintain their clamping force over time — a screw that is undersized, incorrect in thread pitch, or made from a softer alloy can back out or strip, allowing housing sections to separate and the diaphragm to lose its seal. When this happens, pump output drops, leakage occurs, and the diaphragm itself can be damaged. Using the correct OEM-specified fastener like the Wacker Neuson 5000025588 is the straightforward way to keep the pump assembly sealed and performing as intended.
Part Details
| Part Number | 5000025588 |
|---|---|
| Old Part Number | 0025588 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Socket Head Cap Screw |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 50mm/2in Diaphragm Trash Pump | PDT2A | 5000007610, 5000007611 |
| 75mm/3in Diaphragm Trash Pump | PDT3A | 5000007614, 5000007615, 5000007616 |
| 50mm/2in Inline Diaphragm Tras h Pump | PDI2A | 5000007624, 5000007625 |
| 75mm/3in Inline Diaphragm Tras h Pump | PDI3A | 5000007628, 5000007629, 5000009407 |
| 50mm/2in Diaphragm Trash Pump | PDT2 | 5000009494, 5000007633 |
| 75mm/3in Diaphragm Trash Pumps | PDT3 | 5000009495, 5000007619 |
| 50mm/2in Diaphragm Trash Pump | PDI2 | 5000009489 |
| 50mm/2in Diaphragm Trash Pump | PDT2B | 5000007612, 5000007613 |
| 75mm/3in Diaphragm Trash Pump | PDI3 | 5000009491, 5000009492 |
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.
