The Wacker Neuson is a genuine OEM Washer 5/8 Lock designed for the APT4S, APT6S, APT8S, APT4T, APT6T, and APT8T pump series, including skid-mount and towable configurations. Sourced directly from Wacker Neuson, this part is manufactured to the exact tolerances and material specifications required for the application. It is compatible with both standard and Cold Weather variants across the full APT pump lineup, covering surge brake and electric brake towable models as well as skid-mounted units. When you need a fastening component that seats and locks correctly the first time, the OEM part is the dependable choice.
Key Features
- OEM-Grade Locking Retention: — Manufactured to Wacker Neuson's specified hardness and inner diameter tolerances so the washer bites and holds under torque without deforming or backing off.
- Direct Drop-In Replacement: — Matches the original 5/8-inch fastener stack exactly, seating flush against mating hardware without shimming or rework.
- Broad APT Series Coverage: — Fits APT4S, APT6S, APT8S skid-mount pumps and APT4T, APT6T, APT8T towable pumps, including surge brake, electric brake, and Cold Weather variants.
- Prevents Fastener Loosening Under Vibration: — Lock washers on pump assemblies resist loosening caused by engine and pump vibration; a worn or missing washer allows hardware to back out, leading to leaks or structural shifting.
- Genuine Wacker Neuson Part: — Part number 5000175764 is an authentic OEM component, ensuring the correct material grade and geometry for the APT pump platform.
A lock washer is a small but critical fastening component that sits beneath a bolt or nut to prevent it from loosening due to vibration, thermal cycling, or dynamic load shifts. On pump assemblies like the Wacker Neuson APT series, where engine vibration and fluid pressure cycles are constant, maintaining proper clamp force on every fastened joint is essential for leak-free, structurally sound operation. When a lock washer fails, flattens, or goes missing, the fastener it supports can work loose over time, potentially causing misalignment, fluid leaks, or component separation that takes the machine out of service.
Part Details
| Part Number | 5000175764 |
|---|---|
| Old Part Number | 0175764 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Washer 5/8 Lock |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT6S Pump w/Skid | APT6S | 5200018982 |
| APT6T Pump, Surge Brake | APT6T | 5200019646, 5200019647 |
| APT6T Pump, Surge Brake, Cold Weather | APT6T CW | 5200019794, 5200019795 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT8S Pump w/Skid | APT8S | 5200018987 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT8T Pump, Surge Brake | APT8T | 5200019648, 5200019649 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| APT8T Pump, Surge Brake, Cold Weather | APT8T CW | 5200019796, 5200019797 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT6S Pump w/Skid, Cold Weather | APT6S CW | 5200019799 |
| APT8S Pump w/Skid, Cold Weather | APT8S CW | 5200019800 |
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.
