The Wacker Neuson is a genuine OEM Locknut M8 X 1.25 designed for RD27-100 and RD27-120 series hydrostatic vibratory rollers, including standard and traction control configurations. As a factory-sourced component, it meets the exact thread pitch and torque retention specification required for this roller family. This locknut is used across a wide range of RD27 machine configurations, making it a high-demand service item for operators and dealers keeping these rollers in the field. Confirm your machine number against the fitment list to ensure the correct application before ordering.
Key Features
- Genuine OEM Thread Integrity — Manufactured to the exact M8 x 1.25 thread pitch specification, ensuring full engagement and proper clamping force at the fastened joint.
- Self-Locking Design — The locknut's prevailing-torque construction resists loosening under vibration — critical on a machine that generates continuous compaction forces through its drums.
- Broad RD27 Fitment Coverage — Fits a wide range of RD27-100 and RD27-120 hydrostatic vibratory roller configurations, including standard and traction control variants.
- Drop-In Replacement — Identical dimensions and thread form to the original fastener; installs with standard M8 tooling and requires no modification to surrounding hardware.
- Protects Structural Connections — A failed or under-torqued locknut can allow joint movement, accelerating wear on adjacent components and compromising the integrity of the assembly it secures.
A locknut is a fastener engineered to resist loosening when subjected to vibration and dynamic loads. Unlike a standard hex nut, a locknut incorporates a prevailing-torque feature — typically a distorted thread section or nylon insert — that creates friction against the mating thread and holds the nut in place even as the machine vibrates in operation. On a hydrostatic vibratory roller like the RD27, where compaction forces and continuous drum vibration place constant stress on every bolted connection, correctly specified locknuts are essential to maintaining secure assemblies throughout the service life of the machine. A locknut that has stretched, stripped, or lost its locking tension should be replaced immediately to prevent joint separation and potential damage to surrounding components.
Part Details
| Part Number | 5000161956 |
|---|---|
| Old Part Number | 0161956 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Locknut M8 X 1.25 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Vibratory Roller | RD27-100 | 5000620393, 5000620508, 5000620510, 5000620512, 5000620395, 5200009322, 5000620007, 5000620037 |
| Hydrostatic Vibratory Roller | RD27-120 | 5000620394, 5000620509, 5000620511, 5000620513, 5000620396, 5200009323, 5000009469, 5000620038 |
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.
