The Wacker Neuson Square Key 3/16 is a genuine OEM component designed for a range of Wacker Neuson equipment including CT36BDT walk-behind concrete trowels, PT2B centrifugal trash pumps, and B 3000 and B 5000 gasoline power units for internal vibrators. As a direct factory replacement, this square key is manufactured to the exact dimensions and material grade required to maintain proper shaft-to-hub engagement across all listed applications. Part number is verified for compatibility with the CT36BDT, CT36BDT-E, PT2B, B 3000, and B 5000 models. Keeping the correct key in service ensures drivetrain loads are transmitted cleanly without risk of slippage or accelerated wear to mating components.
Key Features
- Exact OEM Dimensions — Manufactured to the precise 3/16 cross-section required for correct keyway seating; undersized or worn keys cause shaft slippage and damage.
- Direct Drop-In Replacement — Matches the original keyway geometry on all listed models for straightforward installation without recutting or shimming.
- Broad Cross-Family Fitment — Verified for CT36BDT and CT36BDT-E walk-behind trowels, PT2B trash pumps, and B 3000 and B 5000 gasoline power units for internal vibrators.
- Torque Transfer Integrity — Correctly sized square key maintains full rotational load transfer between shaft and hub, protecting both components from fretting and impact fatigue.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, ensuring the material hardness and tolerance match what the machine was engineered around.
A square key is a small but critical drivetrain component seated in matching keyways cut into a shaft and its mating hub or gear. It acts as a mechanical interlock that prevents the two parts from rotating independently, transferring torque from the power source to the driven component. When a key shears, deforms, or wears, the shaft spins freely inside the hub, resulting in a complete loss of drive to the working attachment and potential damage to the surrounding keyway surfaces if the machine continues to run.
Part Details
| Part Number | 5000030850 |
|---|---|
| Old Part Number | 0030850 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Square Key 3/16 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 915mm/36in Walk-behind Trowel | CT36BDT | 5000008009 |
| 50mm/2in Centrifugal Trash Pum p | PT2B | 5000006722 |
| Gasoline Power Unit for Intern al Vibrator | B 3000 | 5000005829 |
| Gasoline Power Unit for Intern al Vibrator | B 5000 | 5000007522, 5000006307 |
| 915mm/36in Walk-behind Trowel | CT36BDT-E | 5000008010 |
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.
