The Husqvarna 506986501 Spring Washer is a genuine OEM component designed for the FS513, FS520, and FS524 floor saws. Sourced directly from Husqvarna, this part delivers the exact fit and material specification required to maintain correct fastener tension on these machines. It is a direct, no-compromise replacement for the original, engineered to the same tolerances as the part it replaces. DHS Equipment supplies this part to help keep your floor saw operating at full capacity.
Key Features
- Genuine OEM Spring Tension Rating — manufactured to Husqvarna's specified load and deflection tolerances, ensuring the washer maintains correct clamping force under vibration and operational stress typical of floor saw use.
- Direct Bolt-In Replacement — matches the original mounting dimensions exactly, seating correctly in the same fastener position without any modification to surrounding hardware.
- Confirmed Fitment for FS513, FS520, and FS524 — verified for these Husqvarna floor saws; cross-reference 506986501 against your parts diagram to confirm the correct position before ordering.
- Vibration Resistance — the spring washer's helical design resists loosening under the sustained vibration generated during concrete cutting, helping fastener assemblies stay secure through extended cutting sessions.
- Structural Integrity Maintained — a failed or worn spring washer allows fastener joints to work loose, which can lead to misalignment or premature wear of adjacent components; replacing it promptly restores proper joint integrity.
A spring washer is a helical or wave-form fastener component placed beneath a nut or bolt head to maintain clamping force in assemblies subject to vibration and dynamic loads. On a floor saw like the FS513, FS520, or FS524, these machines generate significant vibration during concrete and asphalt cutting, and a spring washer prevents fasteners from backing out over time. When a spring washer loses its tension or fractures, the fastener joint it supports can work loose, potentially causing component misalignment, accelerated wear on mating parts, or structural failure of the assembly.
Part Details
| Part Number | 506986501 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Spring Washer |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Saw | FS513 |
| Floor Saw | FS520 |
| Floor Saw | FS524 |
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.
