The Wacker Neuson Cap Nut is a genuine OEM component designed for the M1000, M2000, and M3000 series electrical power units for internal vibrators. Sourced directly from Wacker Neuson, this cap nut meets the exact specifications of the original hardware used in production. It fits a wide range of M-series units across multiple voltage and configuration variants, including 120V, 230V, GFCI, RFI, UL, and nonCUL models. Keep a spare on hand to avoid unnecessary delays during routine maintenance or servicing.
Key Features
- Genuine OEM Hardware Integrity — Manufactured to the same thread specification and torque tolerance as the original fastener, ensuring a secure, rattle-free retention on electrical enclosures.
- Drop-In Replacement — Matches the original mounting position and thread pitch on M-series power unit housings, so installation requires only standard hand tools.
- Broad M-Series Compatibility — Confirmed fitment across M1000, M2000, and M3000 electrical power units for internal vibrators, spanning 120V and 230V configurations including GFCI, RFI, UL, and nonCUL variants.
- Protects Internal Components — A correctly seated cap nut shields threaded studs and terminal points on the power unit housing from dirt, moisture, and mechanical damage during operation.
- Electrical Safety Relevance — On electrical power units, a missing or damaged cap nut can expose live fasteners or compromise enclosure integrity; replacing it promptly supports safe operation on the jobsite.
A cap nut — also known as an acorn nut — is a closed-end fastener that threads onto a stud or bolt to cover and protect the exposed thread end. On Wacker Neuson M-series electrical power units for internal concrete vibrators, cap nuts are used to secure and seal critical points on the unit's housing and terminal areas, keeping the assembly tight and protecting against contamination. When a cap nut is lost, stripped, or corroded, the unprotected thread or terminal beneath it becomes vulnerable to damage, potentially affecting the structural integrity or electrical safety of the power unit.
Part Details
| Part Number | 5000081277 |
|---|---|
| Old Part Number | 0081277 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cap Nut |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Electrical Power Unit for Inte rnal Vibrator | M3000/230 | 5000005800 |
| Electrical Power Unit | M2000/120 | 5000007653 |
| Electrical Power Unit for Inte rnal Vibrator | M1000/230 | 5000005041 |
| Electrical Power Unit for Inte rnal Vibrator | M1000/120/nonCUL | 5000005843 |
| Electrical Power Unit for Inte rnal Vibrator | M3000/120/nonCUL | 5000005845 |
| Electrical Power Unit for Inte rnal Vibrator | M2000/115/15A | 5000006305 |
| Electrical Power Unit | M2000/120/nonCUL | 5000007159 |
| Electrical Power Unit for Inte rnal Vibrator | M1000/230/RFI | 5000005494 |
| Electrical Power Unit for Inte rnal Vibrator | M2000/230/RFI | 5000005495 |
| Electrical Power Unit for Inte rnal Vibrator | M2000/230/n Gr | 5000006551 |
| M3000/230/RFI | M3000/230/RFI | 5000006590 |
| Electrical Power Unit for Inte rnal Vibrator | M 2000 | 5000005432 |
| Drive Engine | M1000/120/GFCI | 5100002955 |
| Drive Engine | M2000/120/GFCI | 5100002956 |
| Drive Engine | M3000/120/GFCI | 5100002957 |
| Drive Engine | M1000/120/UL | 5100006158 |
| Drive Engine | M2000/120/UL | 5100006159 |
| Drive Engine | M3000/120/UL | 5100006160 |
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.
