The Wacker Neuson Countersunk Bolt is a genuine OEM Countersunk Bolt designed for the IRSE-FU and IRSEN series internal vibrators, including the IRSE-FU 30, IRSE-FU 38, IRSE-FU 45, IRSE-FU 57, IRSE-FU 58, IRSEN 30, IRSEN 38, IRSEN 45, IRSEN 57, and IRSEN 58 model families. Sourced directly from Wacker Neuson, this is the same bolt specified in the original assembly — ensuring correct thread engagement, head profile, and seating depth without guesswork. Part number covers an exceptionally wide range of models across 115V, 120V, 230V, and 250V configurations, including GB, US, Laser, GV, and standard variants. If you are servicing one of these internal vibrators, this is the correct OEM fastener to have on hand.
Key Features
- Genuine OEM Fastener Grade — Manufactured to Wacker Neuson's original thread and head-profile specifications, so torque values and seating depth match the assembly design exactly.
- Flush-Mount Countersunk Head — The countersunk profile sits flush with the mating surface when fully driven, preventing snag points and maintaining the integrity of the surrounding housing.
- Broad Model Coverage — Fits IRSE-FU 30, 38, 45, 57, and 58 converters as well as IRSEN 30, 38, 45, 57, and 58 internal vibrators across 115V, 120V, 230V, and 250V variants, including Laser and GV configurations.
- Correct Clamping Force — A properly specified OEM bolt maintains the designed clamping load on internal vibrator housings and converter assemblies; an incorrect or worn fastener can allow components to shift under high-frequency vibration.
- Direct Assembly Replacement — Drops straight into the existing bolt position with no rework to surrounding hardware, making it a straightforward swap during routine servicing or repair.
A countersunk bolt is a fastener with a tapered, flat-cone head designed to sit flush with — or just below — the surface of the material it secures. In Wacker Neuson internal vibrators and converter units, fasteners like this hold housing panels, end caps, and internal components firmly in place while the unit operates under continuous high-frequency vibration. Because the head profile is load-bearing as well as positional, using the correct OEM specification bolt matters: an undersized or incorrect-profile replacement may not seat fully, leading to loose joints, vibration-induced fretting, or housing damage over time. Replacing a worn or stripped countersunk bolt with the genuine Wacker Neuson 5000218985 restores the joint to its original clamping specification.
Part Details
| Part Number | 5000218985 |
|---|---|
| Old Part Number | 0218985 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Countersunk Bolt |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| IRSE-FU45/230 | IRSE-FU45/230 | 5000610256 |
| IRSEN45/115Laser | IRSEN45/115Laser | 5000008648 |
| IRSE-FU58/230 | IRSE-FU58/230 | 5000610267 |
| Internal Vib. IRSEN 57/115 | IRSEN 57/115 | 5000008599 |
| Internal Vib. IRSEN 57k/115 | IRSEN 57k/115 | 5000008600 |
| Int. Vib. IRSEN 57/115 Laser | IRSEN 57/115 Laser | 5000008646 |
| Int. Vib. IRSEN 57k/115 Laser | IRSEN 57k/115 Laser | 5000008647 |
| Internal Vib. IRSEN 57/250 | IRSEN 57/250 | 5000008651 |
| Internal Vib. IRSEN 57k/250 | IRSEN 57k/250 | 5000008652 |
| Internal Vib. IRSEN 57/250 GV | IRSEN 57/250 GV | 5000008656 |
| Internal Vib. IRSEN 57k/250 GV | IRSEN 57k/250 GV | 5000008657 |
| Int. Vib. w. Conv. IRSE-FU 38/230 | IRSE-FU 38/230 | 5000610249 |
| Int. Vib. w. Conv. IRSE-FU 38/230 Laser | IRSE-FU 38/230 Laser | 5000610250 |
| IRSE-FU 45/230/03 | IRSE-FU45/230 Laser | 5000610257, 5100019680 |
| IRSE-FU 57/230/03 | IRSE-FU 57/230 Laser | 5000610268 |
| Int. Vib. w. Conv. IRSE-FU 30/230 | IRSE-FU 30/230 | 5000610280 |
| Int. Vib. w. Conv. IRSE-FU 30/230 Laser | IRSE-FU 30/230 Laser | 5000610281 |
| Internal Vib. IRSEN 45/115 | IRSEN 45/115 | 5000008601 |
| Internal Vib. IRSEN 38/115 | IRSEN 38/115 | 5000008602 |
| Int. Vib. IRSEN 38/115 Laser | IRSEN 38/115 Laser | 5000008649 |
| Internal Vib. IRSEN 45/250 | IRSEN 45/250 | 5000008653 |
| Internal Vib. IRSEN 38/250 | IRSEN 38/250 | 5000008654 |
| Internal Vib. IRSEN 45/250 GV | IRSEN 45/250 GV | 5000008658 |
| Internal Vib. IRSEN 38/250 GV | IRSEN 38/250 GV | 5000008659 |
| Int. Vib. w. Conv. IRSE-FU 38/120 GB | IRSE-FU 38/120 GB | 5000610251 |
| IRSEFU 38 | IRSE-FU 38/120 US | 5000610252 |
| Int. Vib. w. Conv. IRSE-FU 45/120 GB | IRSE-FU 45/120 GB | 5000610258 |
| IRSEFU 45 | IRSE-FU 45/120 US | 5000610261 |
| Int. Vib. w. Conv. IRSE-FU 57/120 GB | IRSE-FU 57/120 GB | 5000610271 |
| IRSEFU 57 | IRSE-FU 57/120 US | 5000610275 |
| Int. Vib. w. Conv. IRSE-FU 30/120 GB | IRSE-FU 30/120 GB | 5000610282 |
| IRSEFU 30 | IRSE-FU 30/120 US | 5000610283 |
| Internal Vib. IRSEN 30/250 | IRSEN 30/250 | 5000610071 |
| Internal Vib. IRSEN 30/250 GV | IRSEN 30/250 GV | 5000610072 |
| DF16 | DF 16 | 5000610299 |
| IRSE-FU58/230Laser | IRSE-FU58/230Laser | 5100019681 |
| IRSEN58/250GV | IRSEN58/250GV | 5100010373 |
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.
