The Wacker Neuson Lock Nut M5 is a genuine OEM Lock Nut M5 designed for the G 7AI and GS12Ai portable generator series. As a direct factory replacement, the matches the original M5 thread specification exactly, ensuring proper seating and holding torque right out of the box. Wacker Neuson OEM hardware is manufactured to the same standards as the parts that left the factory, giving you confidence in every fastened joint on your generator.
Key Features
- M5 Thread Integrity: — Cut to the original M5 thread pitch and profile so the nut engages cleanly without cross-threading or slippage during installation.
- Genuine OEM Hardware: — Sourced directly from Wacker Neuson, this lock nut carries the same material grade and locking-element tension as the part originally installed on the machine.
- Generator Family Fitment: — Confirmed compatible with the G 7AI and GS12Ai portable generator series, covering both the 50 Hz 12 kVA variant and the compact G 7AI platform.
- Locking Element Holds Under Vibration: — Generators produce sustained mechanical vibration during operation; the locking feature on this nut resists backing off over time, keeping fastened assemblies secure.
- Drop-In Service Part: — Replaces the original hardware with no rework to the mating fastener or surrounding components, making it a straightforward single-part repair.
A lock nut is a fastener engineered to resist loosening under vibration and dynamic loads. Unlike a standard hex nut, it incorporates a locking mechanism — typically a nylon insert or a deformed thread section — that grips the mating bolt and maintains clamping force even when the assembly is subjected to continuous movement. On a portable generator, where internal engine vibration and fluctuating electrical loads create persistent mechanical stress, a lock nut that has stretched, stripped, or lost its locking torque can allow critical covers, brackets, or terminal assemblies to work loose, leading to misalignment, electrical faults, or component damage. Replacing a worn or damaged lock nut promptly with the correct OEM part restores the original fastening integrity of the assembly.
Part Details
| Part Number | 5000156000 |
|---|---|
| Old Part Number | 0156000 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lock Nut M5 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| G 7AI | G7AI | 5000009104 |
| 50Hz Portable Generator 12 kVA | GS12Ai | 5000009108 |
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.
