The Wacker Neuson Set Screw 5/16-18 X 5/16 is a genuine OEM fastener designed for a range of Wacker Neuson diaphragm pumps and vibratory trench rollers. This hardware-grade set screw is a cross-family component confirmed to fit the PDI3A and PD3B inline diaphragm trash pump series, the PDT2B diaphragm trash pump, the RT560 and RT820 vibratory trench rollers, and the RD880V double drum vibratory roller. As a genuine OEM part, is manufactured to the same specifications as the original hardware installed at the factory, ensuring correct thread engagement and secure retention in every application. Keep this part on hand as a service spare to avoid unnecessary machine downtime across your fleet.
Key Features
- Genuine OEM Thread Specification — 5/16-18 UNC thread form and 5/16 in. length match the original fastener spec exactly, ensuring full thread engagement and correct torque retention.
- Direct Hardware Replacement — Installs like-for-like with no re-tapping or modification needed; threads directly into the existing receiver in pump and roller assemblies.
- Broad Cross-Family Fitment — A single part number covers PDI3A, PD3B, and PDT2B diaphragm pump series alongside RT560, RT820, RT820HT trench rollers and the RD880V double drum roller.
- Secure Component Retention — A correctly seated set screw prevents relative movement between mating components; a loose or missing screw can allow shaft or fitting migration that leads to accelerated wear or misalignment.
- Sourced from Wacker Neuson — Backed by the manufacturer's OEM supply chain, so the grade, coating, and dimensional tolerances are consistent with the original build specification of each covered machine.
A set screw is a headless fastener threaded fully through a collar, hub, or fitting to bear directly against a mating shaft or surface, locking two components together without the need for a nut. In pump assemblies, set screws are commonly used to secure impeller hubs, fitting collars, and drive couplings in place; if one loosens or strips, the retained component can shift or spin freely, disrupting flow and causing internal wear. On roller and compaction equipment, set screws serve a similar retention role in mechanical linkages and shaft assemblies, where even minor play can translate into vibration-induced fatigue over time. Replacing a worn or missing set screw promptly with the correct OEM part restores the secure mechanical connection the assembly depends on.
Part Details
| Part Number | 5000051318 |
|---|---|
| Old Part Number | 0051318 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Set Screw 5/16-18 X 5/16 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 75mm/3in Inline Diaphragm Tras h Pump | PDI3A | 5000007628, 5000007629, 5000009407 |
| Vibratory Trench Roller | RT560 | 5000007643, 5000007642 |
| Vibratory Trench Roller | RT820HT | 5000007645, 5000008047 |
| Vibratory Trench Roller | RT820 | 5000007644, 5000007652 |
| Double Drum Vibratory Roller | RD880V | 5000006736 |
| 75mm/3in Diaphragm Pump | PD3B | 5000006802 |
| 50mm/2in Diaphragm Trash Pump | PDT2B | 5000007612, 5000007613 |
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.
