The Husqvarna 522669301 Lock Nut is a genuine OEM fastener designed for DXR-series demolition robots, including the DXR140, DXR145, DXR250, DXR270, DXR275, DXR300, DXR305, DXR310, DXR315, and DXR250 and DXR300 demolition robot variants. As a factory-original component, this Lock Nut is manufactured to Husqvarna's exact specifications, ensuring correct thread engagement, torque retention, and dimensional fit across the full range of compatible machines. Cross-reference part number 522669301 against your parts diagram to confirm this is the correct fastener for your application. DHS Equipment supplies this genuine OEM part to help keep your demolition equipment operating at full capability.
Key Features
- Genuine OEM Thread Specification — Manufactured to Husqvarna's exact thread pitch and hardness rating, ensuring proper torque load distribution in high-vibration demolition robot assemblies.
- Direct-Replacement Fastener — Matches the original mounting position exactly, allowing straightforward installation without reworking the mating hardware or fastener bore.
- Broad DXR-Series Compatibility — Fits DXR140, DXR145, DXR250, DXR270, DXR275, DXR300, DXR305, DXR310, DXR315, and related demolition robot platforms.
- Vibration-Resistant Locking Action — The lock nut's prevailing-torque design resists loosening under the continuous shock and vibration loads generated during demolition work, maintaining structural integrity of the assembled joint.
- Structural Safety Assurance — In a high-force demolition robot, a failed or improperly specified fastener can compromise attachment points and create hazardous operating conditions; using the correct OEM-specified Lock Nut is essential to safe machine operation.
A lock nut is a self-retaining fastener engineered to resist loosening caused by vibration, impact, and dynamic load cycling — conditions that are continuous and severe in remote-controlled demolition robots like the DXR series. It achieves this through a prevailing-torque mechanism, such as a deformed thread section or nylon insert, that creates friction resistance even when the joint is subject to repeated stress. When a lock nut wears out, stretches, or is replaced with an incorrect fastener, the joint it secures can work loose over time, leading to misalignment, accelerated wear on surrounding components, or loss of structural integrity in a critical attachment point.
For questions about fitment or to confirm that part number this part is correct for your DXR demolition robot, contact the DHS Equipment team for assistance.
Part Details
| Part Number | 522669301 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Lock Nut |
Compatibility & Fitment
| Name | Model |
|---|---|
| Demolition Equipment | DXR140 |
| Demolition Equipment | DXR250 |
| Demolition Equipment | DXR270 |
| Demolition Equipment | DXR300 |
| Demolition Equipment | DXR310 |
| Demolition Equipment | DXR145 |
| Demolition Equipment | DXR275 |
| Demolition Equipment | DXR305 |
| Demolition Equipment | DXR315 |
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.
