The Wacker Neuson is a genuine OEM Hexagon Nut designed for the PDT and PDI series diaphragm pumps, including the PDT2A, PDT2, PDT3A, PDI2A(I), PDI3A, and PDI3A(I) models. As a genuine OEM component, it is manufactured to the exact material grade and dimensional specification of the original hardware used in production — ensuring correct torque retention and a secure, lasting fastening point. This nut is a direct-fit replacement that installs exactly as the original, with no guesswork on thread pitch or sizing. Whether you are completing routine maintenance or a full service, part number keeps your diaphragm pump assembled and operating as intended.
Key Features
- OEM-Grade Material and Thread Specification — Manufactured to the exact thread pitch, diameter, and material hardness of the original fastener, ensuring proper torque load and a secure hold across pump service cycles.
- Direct-Fit Replacement — Matches the original hardware profile used in PDT and PDI series diaphragm pumps, dropping into place without rework or sizing adjustments.
- Broad PDT/PDI Series Coverage — Fits PDT2A, PDT2, PDT3A, PDI2A(I), PDI3A, and PDI3A(I) diaphragm pump models across multiple production runs.
- Maintains Structural Integrity Under Load — A correctly torqued, properly spec'd nut keeps pump assemblies tight during continuous operation; a worn or incorrect fastener risks loosening, leaks, or component separation.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, giving you confidence that 5000179858 meets the same standard as the hardware installed at the factory.
A hexagon nut is a fundamental fastener that secures assembled components by threading onto a bolt or stud and clamping parts together under a specified torque. In a diaphragm pump, fasteners like this nut play a critical role in keeping housings, covers, and internal assemblies firmly seated during the continuous flexing and pressure cycling that diaphragm pumps experience in operation. When a fastener loosens, corrodes, or is replaced with an incorrect size, it can lead to misalignment, fluid leaks, or premature wear of surrounding components — making correct specification essential at every service interval.
Part Details
| Part Number | 5000179858 |
|---|---|
| Old Part Number | 0179858 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Hexagon Nut |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PDT2A | PDT2A | 5000620769, 5100075510 |
| PDT2 Pump, Diaphragm | PDT2 | 5000620770 |
| PDI2A(I) | PDI2A(I) | 5000620772, 5100075511 |
| PDT3A | PDT3A | 5000620773, 5100075507 |
| PDT3 | PDT3 | 5000620774 |
| PDI3A | PDI3A | 5000620775, 5100075508 |
| PDI3A(I) | PDI3A(I) | 5000620776, 5100075509 |
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.
