The Wacker Neuson 7/16 Heavy Nut is a genuine OEM component designed for PDT3A, PDI3A, PDT2A, and PDI2A(I) series diaphragm pumps. As a direct factory part, it meets the same specifications as the hardware installed at the time of manufacture, ensuring a consistent, dependable fit. This nut is confirmed compatible across multiple pump configurations including the PDI3A(I) Pump Diaphragm and PDI2A(I) Pump variants. Keeping the correct fastener hardware in place is essential to maintaining the structural integrity and safe operation of your pump assembly.
Key Features
- Genuine OEM Fastener Grade — Manufactured to the exact hardness and thread specification Wacker Neuson requires for heavy-duty pump fastening applications, so torque loads are handled correctly every time.
- Drop-In Hardware Replacement — Sized to the 7/16 thread spec used in the original pump assembly, so it threads directly into existing hardware positions without any modification to mating components.
- Broad Pump Series Coverage — Fits PDT3A, PDI3A, PDI3A(I), PDT2A, and PDI2A(I) Wacker Neuson diaphragm pump models, covering a wide range of the PDT and PDI pump families.
- Structural Holding Power — A heavy nut classification means increased bearing surface and wall thickness compared to a standard nut, helping maintain clamp force under vibration-heavy pump operation.
- Fuel and Fluid System Safety — Correct fastener torque retention in pump assemblies directly affects housing seal integrity; using the proper heavy nut specification helps prevent leaks and housing separation under load.
A heavy nut is a thicker, higher-strength variant of a standard hex nut, engineered to handle elevated clamping loads and resist loosening under sustained vibration. In diaphragm pump assemblies, fasteners like this secure critical housing components that contain fluid pressure during operation — if a nut stretches, strips, or backs off, it can compromise the seal between pump sections and lead to fluid leaks or housing failure. Replacing a worn or damaged nut with the correct OEM specification part restores the intended clamp load and keeps the pump operating as designed.
Part Details
| Part Number | 5100075628 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | 7/16 Heavy Nut |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PDT3A | PDT3A | 5100075507 |
| PDI3A | PDI3A | 5100075508 |
| PDI3A(I) PUMP DIAPHRAGM | PDI3A(I) | 5100075509 |
| PDT2A | PDT2A | 5100075510 |
| PDI2A(I) PUMP | PDI2A(I) | 5100075511 |
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.
