Wacker Neuson 5000407043 Lock Washer

The Wacker Neuson Lock Washer is a genuine OEM lock washer designed for a broad range of Wacker Neuson vibratory plates, single drum vibratory rollers, and floor saws — including the VP Series, WP Series, WPU Series, BFS Series, RS Series, and MPU Series machines. As a direct factory-sourced component, the meets the same specifications as the part originally installed at the time of manufacture. Compatible across a wide cross-section of the Wacker Neuson compaction and cutting equipment lineup, this lock washer is the correct choice when you need a verified, like-for-like replacement.

Key Features

• Genuine OEM Retention Integrity — Manufactured to Wacker Neuson's original specification, ensuring the correct clamp load and locking engagement for fastener joints on compaction and cutting equipment.
• Drop-In Replacement — Matches the original mounting hardware profile exactly, seating and torquing the same way as the factory-installed washer with no rework needed.
• Wide Fitment Coverage — Fits VP, WP, WPU, WPP, BFS, RS, MPU, AP, and MP Series equipment, covering single-direction vibratory plates from 10 kN to 60 kN, single drum walk-behind rollers, and BFS floor saws.
• Prevents Fastener Back-Out — A properly functioning lock washer maintains fastener tension under vibration; a worn or missing one can allow critical bolts to loosen, leading to misalignment or component separation during operation.
• Sourced Direct from the OEM — Carries the Wacker Neuson part number 5000407043, so you can confirm fitment against your machine's parts diagram before ordering.

A lock washer is a hardened ring fitted beneath a fastener — typically a bolt or nut — to resist loosening caused by vibration, dynamic loads, and thermal cycling. On vibratory compaction equipment and floor saws, where continuous oscillation places constant stress on every bolted joint, maintaining fastener tension is critical to keeping assemblies secure and running true. When a lock washer deforms, cracks, or goes missing, fasteners can back out progressively, causing excessive play in components, accelerated wear on mating surfaces, and, in severe cases, unexpected mechanical failure mid-operation.

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.