The Wacker Neuson is a genuine OEM Nut 1-20 Unef 2A designed for the RD12A-90, RD12-90, RD11V, RD11A, and RD880V tandem roller series. As a direct OEM part, the is manufactured to Wacker Neuson's exact thread specification — 1-20 UNEF-2A — ensuring correct engagement and torque retention in the assembly it secures. Sourcing a genuine OEM fastener like the means you get the same part that left the factory, with no guesswork on thread class or material grade. Confirm the part number against your machine's serial number before ordering to ensure an exact match for your specific configuration.
Key Features
- Exact Thread Class: — Machined to 1-20 UNEF-2A specification, ensuring proper thread engagement, torque capacity, and secure clamping force in the original fastener position.
- Genuine OEM Sourcing: — Supplied directly through Wacker Neuson's authorized parts network, so you receive the identical fastener installed at the factory — same material grade, same thread form.
- Broad RD-Series Compatibility: — Fits RD12A-90, RD12-90, RD11V, RD11A, and RD880V double-drum vibratory tandem rollers, covering both solid and foldable ROPS configurations.
- Structural Integrity Under Vibration: — On a vibratory tandem roller, fasteners are subject to continuous oscillation loads; an incorrectly specified nut can back off or strip, compromising the integrity of the assembly it secures.
- Drop-In Service Replacement: — Matches the original fastener's dimensions and thread engagement length, so installation requires only standard tooling with no rework to mating components.
A nut of the 1-20 UNEF-2A specification is a fine-thread fastener used where high clamping load, vibration resistance, or limited axial space demands a tighter thread pitch than a standard coarse-thread nut can provide. The "2A" external thread class designation defines the tolerance and fit of the mating fastener, ensuring consistent assembly across production and service. On vibratory tandem rollers such as the RD series, fine-thread fasteners are critical in locations exposed to continuous drum vibration — a loose or mismatched nut in these positions can cause component movement, accelerated wear, or assembly failure that halts compaction operations.
Part Details
| Part Number | 5000083689 |
|---|---|
| Old Part Number | 0083689 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Nut 1-20 Unef 2A |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD12A-90 ROLLER,DBL DRUM,GRN | RD12A-90 | 5000620369, 5000620058, 5000620320 |
| RD12-90 ROLLER, DOUBLE DRUM, SOLID ROPS | RD12-90 | 5000620059, 5000620321 |
| Hydrostatic Double Drum Vibrat ory Roller | RD11V | 5000007694 |
| Hydrostatic Double Drum Vibrat ory Roller | RD11A | 5000007693 |
| Double Drum Vibratory Roller | RD880V | 5000006736 |
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.
