The Husqvarna 539990187 Washer is a genuine OEM replacement component designed for FS-series floor saws, MS-series tile and masonry saws, and S-series dust and slurry equipment. As a direct Husqvarna OEM part, it is manufactured to the exact material and dimensional standards of the original, ensuring a correct installation every time. Compatible models include the FS4600G, FS4800D, FS6600D, FS6800D, FS8400D, Pro65G, MS355, MS355G, MS510, MS510G, MS610, S22B, and S22H. DHS Equipment supplies this genuine OEM washer to help keep your equipment running at full performance.
Key Features
- Genuine OEM Material Grade — manufactured to Husqvarna's exact hardness and dimensional tolerances, ensuring proper load distribution and secure fastener clamping across all listed applications.
- Direct Drop-In Replacement — matches the original washer's bore diameter, outer profile, and thickness so it seats correctly with no rework or modification to surrounding hardware.
- Broad Equipment Compatibility — a single OEM part number covering FS-series floor saws, MS-series tile and masonry saws, and S-series dust and slurry equipment, confirmed against Husqvarna's parts diagrams.
- Maintains Fastener Clamping Integrity — a correctly fitted washer distributes bolt load evenly across mating surfaces, preventing surface damage and fastener loosening under the vibration and load cycles typical of cutting and sawing equipment.
- Verify with Part Number 539990187 — cross-reference part number 539990187 against your machine's parts diagram to confirm this is the correct washer position before ordering.
A washer serves as a load-spreading interface between a fastener — such as a bolt or nut — and the surface it clamps. By distributing the clamping force over a wider area, it prevents the fastener from pulling through or damaging the mating component and helps maintain consistent tension as the machine vibrates during operation. When a washer is worn, deformed, or missing, fasteners can work loose or cause surface damage to housings and brackets, leading to misalignment or structural failure of the assembly it secures.
Part Details
| Part Number | 539990187 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Washer |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Saw | FS4600G |
| Floor Saw | FS4800D |
| Floor Saw | FS6600D |
| Floor Saw | FS6800D |
| Floor Saw | FS8400D |
| Tile & Masonry Saw | MS355 |
| Tile & Masonry Saw | MS355G |
| Tile & Masonry Saw | MS510 |
| Tile & Masonry Saw | MS610 |
| Floor Saw | Pro65G |
| Tile & Masonry Saw | MS510G |
| Dust & Slurry Equipment | S22B |
| Dust & Slurry Equipment | S22H |
| Floor Saw | PRO65G |
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.
