The Husqvarna 503226601 Square Nut is a genuine OEM fastener designed for Husqvarna K-series power cutters and construction equipment, including the K540, K650, K700, K750, K950, K1250, K1270R, K2500, K950Rescue, RA10, and RA10S. As a factory-original component, this square nut is manufactured to Husqvarna's exact specifications, ensuring a true match to the original hardware in your machine. DHS Equipment supplies this part to help keep your equipment running at full capacity. Cross-reference part number 503226601 against your parts diagram to confirm the correct position before ordering.
Key Features
- Genuine OEM Fastener Grade — Manufactured to Husqvarna's exact material and dimensional specifications, delivering the correct clamping force and thread engagement for secure, lasting assembly.
- Drop-In Hardware Fit — Matches the original square nut profile exactly, seating flush in its retaining channel or recess without modification to surrounding components.
- Broad K-Series Compatibility — Fits the K540, K650, K700, K750, K950, K1250, K1270R, K2500, and K950Rescue power cutters, as well as the RA10 and RA10S construction equipment units.
- Structural Integrity Restored — A worn, stripped, or missing square nut compromises the clamping integrity of the assembly it secures; replacing it with the correct OEM part restores proper torque retention and keeps critical components firmly seated.
- Operational Safety — On high-vibration equipment like power cutters, correct fastener spec is a safety consideration — an undersized or incorrect nut can back out under load, creating a hazard during operation.
A square nut functions as the threaded counterpart to a bolt or machine screw, providing a larger bearing surface than a standard hex nut to distribute clamping load across a wider area. In power cutters and construction equipment, square nuts are commonly used where a fastener must seat into a slot or channel to prevent rotation during tightening, making the correct profile essential. When a square nut is stripped, corroded, or missing entirely, the fastened joint loses its holding strength, which can lead to loose assemblies, vibration-induced wear on surrounding components, or potential separation of parts during operation.
Part Details
| Part Number | 503226601 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Square Nut |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Cutter | K40 |
| Power Cutter | K950 |
| Power Cutter | K1250 |
| Power Cutter | K650 |
| Power Cutter | K700 |
| Power Cutter | K750 |
| Power Cutter | K2500 |
| Construction Equipment | RA10 |
| Construction Equipment | RA10S |
| Power Cutter | K1270R |
| Power Cutter | K540 |
| Power Cutter | K950Rescue |
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.
