The Wacker Neuson Lock Nut 7/16-20 is a genuine OEM fastener designed for the RD27-100 and RD27-120 hydrostatic vibratory rollers. Sourced directly through Wacker Neuson's authorized parts program, this lock nut meets the exact thread specification and torque retention standards required for the RD27 tandem roller platform. It is confirmed to fit multiple machine configurations across the RD27-100 and RD27-120 series, including both standard and traction control variants.
Key Features
- OEM Thread Integrity — Genuine Wacker Neuson hardware engineered to the exact 7/16-20 thread specification, ensuring proper clamp load and torque retention in critical fastener positions.
- Positive Locking Design — The lock nut's prevailing-torque or locking feature resists loosening under vibration and dynamic load — conditions that are constant on a compaction roller in operation.
- Direct-Fit Replacement — Installs in place of the original without thread chasing or rework; correct thread pitch and nut geometry match the OEM fastener point exactly.
- Broad RD27 Series Coverage — Verified fitment across RD27-100 and RD27-120 configurations, including standard hydrostatic vibratory roller and traction control variants.
- Structural Dependability — On vibratory compaction equipment, fastener failure can compromise component alignment and machine integrity; using the correct OEM lock nut maintains the connection as designed.
A lock nut is a threaded fastener engineered to resist self-loosening when exposed to vibration, shock loads, and continuous dynamic movement. On tandem vibratory rollers like the RD27 series, components are subjected to sustained vibration cycles during compaction work, making standard fasteners prone to backing out over time. The 7/16-20 fine thread designation on part 5000174406 provides greater thread engagement and clamping strength than a coarse-thread equivalent, and the locking feature — whether a nylon insert, prevailing-torque profile, or flange design — maintains holding force between service intervals. A failed or missing lock nut at a critical joint can allow components to shift, accelerating wear on surrounding hardware and potentially causing more significant mechanical damage if left unaddressed.
Part Details
| Part Number | 5000174406 |
|---|---|
| Old Part Number | 0174406 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lock Nut 7/16-20 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Vibratory Roller | RD27-100 | 5000620393, 5000620508, 5000620510, 5000620512, 5000620395, 5200009322 |
| Hydrostatic Vibratory Roller | RD27-120 | 5000620394, 5000620509, 5000620511, 5000620513, 5000620396, 5200009323 |
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.
