Wacker Neuson 5100016273 Serrated Lock Washer

The Wacker Neuson Serrated Lock Washer is a genuine OEM serrated lock washer designed for the RD and RC series compactors, including the RD18, RD24, RD27, RD28, RC50, RC70, and RC110 model families. As a direct OEM replacement, this washer is sourced from Wacker Neuson and meets the same exacting standards as the original hardware installed at the factory. It fits a wide range of tandem rollers and single drum soil compactors across both standard and US-spec configurations. Having the correct hardware on hand keeps your compactor running as intended and prevents the fastener loosening that can result from using incorrect or worn washers.

Key Features

• Genuine OEM Serration Profile — The serrated contact surface provides the bite and grip required to resist fastener back-off under vibration loads typical of compaction equipment.
• Direct Hardware Match — Dimensionally identical to the original washer, so it seats and stacks correctly with existing fastener hardware without rework or shimming.
• Broad Compactor Fitment — Compatible with RD18, RD24, RD27, RD28 tandem rollers and RC50, RC70, and RC110 single drum soil compactors, including CAB, ROPS, DPF, and O-series variants.
• Vibration Resistance — Engineered to maintain clamp load in high-vibration environments; a worn or missing serrated washer can allow critical fasteners to loosen during operation, leading to component damage.
• Wacker Neuson Authorized Part — Supplied as part number 5100016273 directly through the Wacker Neuson parts network, ensuring authenticity and traceability.

A serrated lock washer sits beneath a fastener head or nut and uses hardened radial teeth to bite into both the fastener and the mating surface, creating mechanical resistance that prevents the fastener from loosening under vibration. On compaction equipment, where constant vibration is a normal operating condition, this type of washer plays an important role in maintaining the integrity of bolted connections throughout the machine. When a serrated lock washer becomes flattened, corroded, or is missing entirely, fasteners can work loose over time, potentially causing misalignment, component wear, or more serious mechanical failures.

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.

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