The Wacker Neuson Lock Washer A4 is a genuine OEM fastening component designed for DPU and DPS series reversible and single-direction vibratory plate compactors. As a direct OEM part, the is manufactured to the same specifications as the original hardware installed at the factory, ensuring correct dimensional fit across compatible machines. Confirmed fitment includes the DPU 2440H, DPU 2450H, DPS 1850H, and DPS 1850H Asphalt vibratory plates.
Key Features
- OEM-Grade Locking Retention — Manufactured to the same hardness and tooth geometry as the original, maintaining secure fastener tension under continuous vibration loads generated by plate compactor operation.
- A4 Stainless Steel Construction — The A4 material grade provides corrosion resistance suited to outdoor compaction environments where exposure to moisture, grit, and debris is constant.
- Direct Drop-In Hardware — Matches the original bore diameter and outer profile, seating correctly against mating fastener and housing surfaces without rework or modification to surrounding components.
- Broad DPU and DPS Series Coverage — Fits the DPU 2440H, DPU 2450H, DPS 1850H, and DPS 1850H Asphalt, covering both reversible and single-direction vibratory plate compactor variants in this output range.
- Prevents Fastener Loosening Under Load — Vibratory plate compactors subject fasteners to repeated cyclical stress; a worn or missing lock washer allows critical hardware to back out, leading to component misalignment or mechanical failure during operation.
A lock washer is a hardened fastening component placed beneath a bolt or nut to prevent it from loosening due to vibration or dynamic loading. In vibratory plate compactors, where the entire machine generates continuous oscillation forces during use, maintaining secure fastener tension across the drivetrain, eccentric weight housing, and frame assembly is critical to safe and consistent operation. When a lock washer deforms, fractures, or goes missing, the associated fastener can work loose progressively, eventually causing mechanical play, component damage, or an unsafe condition that interrupts compaction work.
Part Details
| Part Number | 5000020250 |
|---|---|
| Old Part Number | 0020250 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lock Washer A4 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Reversible Vibratory Plate, 24 kN, 40cm/16in | DPU 2440H | 5000007870 |
| Single Direction Vibratory Pla te, 18kN, 50cm/20in | DPS 1850H | 5000008397, 5000008750 |
| Vibration plate DPU 2450H | DPU 2450H | 5000008746 |
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.
