The Husqvarna 522669701 Lock Nut is a genuine OEM fastener designed for Husqvarna DXR demolition robots and demolition equipment attachments, including the DXR250, DXR270, DXR310, DXR315, ER50, MG100DXR, MG200, SB102, SB152, and SB202. As a direct Husqvarna OEM component, this Lock Nut is manufactured to the exact thread profile, material grade, and torque specification required for secure, long-term retention in demanding demolition applications. Cross-reference part number 522669701 against your parts diagram to confirm the correct position before ordering. DHS Equipment supplies this part to help keep your equipment running at full capability.
Key Features
- Genuine OEM Thread Integrity — Manufactured to Husqvarna's exact thread form and material grade, ensuring the locking mechanism engages and holds correctly under the high-vibration loads typical of demolition robot operation.
- Direct Hardware Replacement — Matches the original fastener specification, allowing straightforward installation without reworking mounting points or mating threads.
- Broad Demolition Equipment Fitment — Compatible with DXR250, DXR270, DXR310, DXR315 demolition robots as well as ER50, MG100DXR, MG200, SB102, SB152, and SB202 demolition attachments.
- Vibration-Resistant Retention — The locking feature resists loosening during sustained hammer, breaker, and grapple operations, maintaining joint integrity throughout demanding work cycles.
- Structural Safety Assurance — On demolition robots and heavy attachments, fastener failure can compromise structural connections under load; using the correct OEM-specified nut maintains the integrity of critical joints.
A lock nut is a self-retaining fastener engineered to resist loosening under vibration and dynamic loading. Unlike a standard hex nut, it incorporates a locking element — such as a prevailing-torque nylon insert or deformed thread profile — that grips the mating bolt and prevents rotation during operation. On Husqvarna DXR demolition robots and their breaker and grapple attachments, fasteners are subjected to intense, repetitive impact forces; a nut that backs off even partially can lead to joint movement, accelerated wear on mating components, or structural failure. Replacing a worn or damaged lock nut with the correct Husqvarna OEM part restores the designed clamping force and keeps critical connections secure through the full service life of the equipment.
Part Details
| Part Number | 522669701 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Lock Nut |
Compatibility & Fitment
| Name | Model |
|---|---|
| Demolition Equipment | DXR250 |
| Demolition Equipment | DXR270 |
| Demolition Equipment | DXR310 |
| Demolition Equipment | ER50 |
| Demolition Equipment | MG200 |
| Demolition Equipment | SB102 |
| Demolition Equipment | SB152 |
| Demolition Equipment | MG100DXR |
| Demolition Equipment | DXR315 |
| Demolition Equipment | SB202 |
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.
