Wacker Neuson 5000129020 Locknut

The Wacker Neuson Locknut is a genuine OEM component designed for a wide range of Wacker Neuson equipment, including DPU and DPS reversible and single-direction vibratory plate compactors, PT series trash pumps, HSH hydronic surface heaters, DS series diesel rammers, DPS vibratory plates, and E1100 ground heaters. As a genuine OEM part, the is manufactured to the exact material and dimensional tolerances specified for these machines — ensuring it threads, seats, and holds exactly as intended. This locknut sees service across an extensive equipment lineup, from the DPU2440H through the DPU6275 series, making it a high-demand fastener for fleet operators and service technicians alike. If you're servicing a PT2H or PT3H trash pump, an HSH350 hydronic surface heater, or any of the broad DPU or DPS plate compactor families, this is the correct replacement fastener.

Key Features

• Genuine OEM Thread Integrity — Manufactured to Wacker Neuson's exact thread specification, ensuring full engagement and proper torque retention without risk of cross-threading or loosening under vibration.
• Vibration-Resistant Locking Design — Engineered to maintain clamping force in high-vibration environments typical of plate compactors and rammers, where standard nuts can back off and cause assembly failures.
• Broad Cross-Equipment Compatibility — A single part number covering DPU, DPS, DS, PT, HSH, and E1100 series equipment, simplifying inventory management for dealers and multi-equipment fleet operators.
• Direct OEM Replacement — Drops into the same position as the original fastener with no modification to mating hardware, maintaining the integrity of the surrounding assembly.
• Critical Fastener for High-Load Applications — Used across compaction, pump, and heating equipment where fastener failure can lead to component separation, fluid leaks, or structural loosening during operation.

A locknut is a threaded fastener engineered to resist loosening when subjected to vibration, torque, and dynamic loads — conditions that standard nuts cannot reliably handle over time. In compaction equipment such as the DPU and DPS vibratory plate families, fasteners are exposed to constant cyclical vibration, making a locknut's resistance to self-loosening critical to keeping assemblies secure. When a locknut wears, strips, or backs off, it can allow connected components to shift or separate, leading to equipment damage, fluid leaks in pump applications, or unsafe operating conditions — making timely replacement with the correct OEM part essential.

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.