Wacker Neuson 5000202444 Lock Washer

The Wacker Neuson is a genuine OEM Lock Washer designed for RD7 series tandem rollers and the DPU 4045H, DPU 4545H, DPU 5045H, DPU 5545H, and DPU 6555H reversible vibratory plate compactors. As a direct Wacker Neuson OEM part, the is manufactured to the same specification as the original hardware, ensuring correct tension, load distribution, and fastener retention across all covered models. This single part number covers an extensive range of RD7 and DPU variants, making it a convenient stock item for dealers and field service teams supporting mixed fleets.

Key Features

• Genuine OEM Locking Integrity — Manufactured to Wacker Neuson's original torque-retention specification, delivering the correct spring tension and bite angle required for secure fastener engagement on both roller and vibratory plate assemblies.
• Direct Hardware Replacement — Matches the original dimensional profile for drop-in installation without reworking mating hardware or fastener threads.
• Broad Fleet Coverage — A single part number that services RD7 tandem rollers and DPU 4045H through DPU 6555H reversible vibratory plate compactors across multiple model-year configurations.
• Prevents Fastener Loosening Under Vibration — Heavy compaction equipment generates sustained vibration loads that gradually back out standard fasteners; a correctly spec'd lock washer maintains clamp force and prevents joint failure during operation.
• Critical for Drivetrain and Structural Fastener Reliability — On compaction equipment, loose fasteners in drive, exciter, or frame assemblies can escalate quickly from a minor hardware issue to costly structural damage; replacing worn or deformed lock washers at each service interval is sound preventive maintenance.

A lock washer is a hardened steel ring with a split or toothed profile that sits between a fastener head (or nut) and the mating surface. As the fastener is tightened, the washer's spring geometry is compressed, creating a constant outward force that resists vibration-induced rotation and keeps the fastener at its intended clamping load. On vibratory compaction equipment such as the DPU reversible plate compactors and RD7 tandem rollers, the continuous high-frequency vibration environment is especially demanding on threaded connections. When a lock washer loses its spring tension — through corrosion, repeated use, or over-compression — it can no longer prevent fastener back-out, which may lead to loosened assemblies, accelerated wear on adjoining components, and potential mechanical failure if left unaddressed.

Part Details

Compatibility & Fitment

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.