The Wacker Neuson Screw M8 Bolt Special is a genuine OEM fastener designed for the WP1550AW, WP1540AW, WP1550A, WP1540A, WP1540, WP1550W, WP1550, and WP1540W vibratory plate compactors. Sourced directly from Wacker Neuson, this is the same OEM-spec hardware used in original production — so you can be confident in the fit and specification when the original fastener needs replacing. Whether you're servicing a 400mm or 500mm plate model, part number covers the full WP1540 and WP1550 series range.
Key Features
- OEM Thread and Torque Spec: — Manufactured to Wacker Neuson's original M8 fastener specification, ensuring the correct thread pitch, head geometry, and clamp load for the application.
- Drop-In Fitment Across WP Series: — Directly replaces the original fastener on WP1540 and WP1550 series plates, including AW and W variants, with no modification to mounting hardware needed.
- Covers Both Plate Width Variants: — Compatible with both 400mm (15.5 in) and 500mm (19.5 in) vibratory plate models, making it a practical stock item for fleets running mixed WP series machines.
- Structural Integrity Where It Counts: — A correctly rated special bolt in a vibratory compactor resists the constant cyclic loading generated during compaction; an incorrect or worn fastener can lead to component loosening and unplanned service intervals.
- Genuine Wacker Neuson Part: — Supplied as an authentic OEM component under part number 5000401839, not a generic substitute, so traceability and spec compliance are built in.
A special bolt of this type serves as a precision fastener within the vibratory plate's assembly, securing key structural or functional components that must remain firmly clamped under the high-frequency vibration loads these machines generate during soil and aggregate compaction. Unlike a standard M8 bolt, a "special" designation typically indicates a non-standard head form, shank length, or hardness grade specific to the OEM application — meaning a generic hardware-store substitute may not deliver the same holding performance. When this fastener wears, stretches, or is lost during service, replacing it with the correct OEM part protects the integrity of the surrounding assembly and keeps the compactor running as designed.
Part Details
| Part Number | 5000401839 |
|---|---|
| Old Part Number | 0401839 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Screw M8 Bolt Special |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| WP 1550AW | WP1550AW | 5000630043 |
| WP 1540AW | WP1540AW | 5000630045 |
| Vibratory Plate, 15 kN, 500mm/ 19.5in | WP1550A | 5000630044 |
| Vibratory Plate, 15 kN, 400mm/ 15.5in | WP1540A | 5000630046 |
| Vibratory Plate, 15 kN, 400mm/ 15.5in | WP1540 | 5000630067 |
| Vibratory Plate, 15 kN, 500mm/ 19.5in | WP1550W | 5000630064 |
| Vibratory Plate, 15 kN, 500mm/ 19.5in | WP1550 | 5000630065 |
| Vibratory Plate, 15 kN, 400mm/ 15.5in | WP1540W | 5000630066 |
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.
