The Wacker Neuson Lock Nut M10 is a genuine OEM Lock Nut M10 designed for the WP, WPP, and WPU single-direction and reversible vibratory plate series, as well as BFS and MFS floor saws. Sourced directly from Wacker Neuson, this genuine OEM component is manufactured to the exact tolerances and thread specifications required for correct installation and secure retention in the machine. It fits an extensive range of models including the WP1030A, WP1235A, WP1540A, WP1550A, WP2050A, WPP1540A, WPP1550A, WPU1550A, BFS12, BFS1214, MFS12, MFS14, and their water-ballast and wheeled variants. With a broad fitment footprint across Wacker Neuson's compact soil compaction and cutting equipment lineup, part number is a straightforward drop-in replacement that restores the fastening integrity of the assembly.
Key Features
- Correct Thread Engagement: — Manufactured to M10 thread specification, ensuring full thread engagement and proper torque retention without the risk of cross-threading or stripping.
- Genuine OEM Locking Performance: — The locking feature resists vibration-induced loosening — critical on compaction equipment that operates under constant high-frequency vibration cycles.
- Direct-Fit Replacement: — Matches the original fastener geometry exactly, dropping straight into the existing hardware position with no fitting adjustment or rework needed.
- Wide Model Coverage: — A single part number covers WP, WPP, and WPU vibratory plate compactors plus BFS and MFS floor saw models, making it a practical stock item for fleets running mixed Wacker Neuson equipment.
- Maintains Fastener Integrity: — Using the correct OEM-spec lock nut preserves the clamping load of the assembly; an incorrect or worn nut can allow critical components to shift or separate under load.
A lock nut is a fastener engineered to resist loosening when subjected to vibration, shock loads, or dynamic forces — exactly the conditions present on vibratory plate compactors and floor saws. Unlike a standard hex nut, the locking mechanism (whether a nylon insert, distorted thread, or prevailing-torque profile) creates additional friction that holds the nut in position throughout the machine's operating cycle. When a lock nut wears out, loses its locking property, or is replaced with a non-locking equivalent, connected components can work loose over time, leading to misalignment, accelerated wear on mating parts, or outright mechanical failure mid-operation.
Part Details
| Part Number | 5000401129 |
|---|---|
| Old Part Number | 0401129 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lock Nut M10 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| WPU1550A | WPU1550A | 5000630033, 5100071592 |
| WPU1550Aw | WPU1550Aw | 5000630034 |
| Single direction vibratory plate WP1030A | WP1030A | 5000630015 |
| Single direction vibratory plate WP1235A | WP1235A | 5000630016 |
| WPP 1550Aw | WPP1550Aw | 5000630030 |
| BFS12 FLOOR SAW | BFS12 | 5000630000 |
| WP 1540W | WP1540W | 5000630018 |
| WP 1550W | WP1550W | 5000630020 |
| WP 2050W | WP2050W | 5000630023 |
| WPP 1540A | WPP1540A | 5000630025 |
| WPP 1540W | WPP1540W | 5000630027 |
| WPP 1550A | WPP1550A | 5000630029 |
| WPP 1550W | WPP1550W | 5000630031 |
| WPP 1550Ww | WPP1550Ww | 5000630032 |
| WP 1540A | WP1540A | 5000630017 |
| WP 1550A | WP1550A | 5000630019 |
| WP 1550RAW | WP1550RAW | 5000630021 |
| WP 2050A | WP2050A | 5000630022 |
| WPP 1540Aw | WPP1540Aw | 5000630026 |
| WPP 1540Ww | WPP1540Ww | 5000630028 |
| Single Direction Plates | WP1235Aw | 5000630103 |
| Single Direction Plates | WP1235Aw-L | 5000630104, 5000630105 |
| Single Direction Plates | WP1235Aw-LL | 5000630122 |
| Single Direction Plate | WP1030Aw | 5000630110 |
| Single Direction Plates | WP1540Aw-L | 5000630123 |
| Reversible Plates | WPU 1550A-L | 5000630124 |
| Single Direction Plates | WP2050Aw-L | 5000630125 |
| Single Direction Plates | WP1550Aw-L | 5000630126 |
| Floor Saws | BFS1214 | 5000630004, 5000630093 |
| Single Direction Plates | WP1550Aw | 5000630112 |
| Single Direction Plate | WP1550Ww | 5000630113 |
| Single Direction Plate | WP2050Aw | 5000630115 |
| Single Direction Plate | WP2050Ww | 5000630116 |
| Floor Saw | BFS 12 | 5000630092 |
| Single Direction Plates | WP1540Aw | 5000630106 |
| Single Direction Plate | WP1540Ww | 5000630111 |
| Floor Saw | BFSX1214 | 5000630101 |
| Floor Saw | MFS14 | 5000630186, 5000630221 |
| Floor Saw | MFSX14 | 5000630246 |
| WPU1550AW-US | WPU1550AW-US | 5100069715 |
| WPU1550Aw | WPU1550AW | 5100071591 |
| Floor Saws | BFS 614B | 5000009526 |
| Floor Saws | BFS 614AB | 5000009527 |
| Floor Saw | MFS12 | 5000630187, 5000630220 |
| Floor Saw | MFSX14(RAW) | 5000630247 |
| WPU1550A-US | WPU1550A-US | 5100069716 |
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.
