The Husqvarna 735216401 Lock Washer is a genuine OEM fastening component designed for a wide range of Husqvarna floor saws, floor grinders, and floor scarifiers. This part is a direct fit for models including the FS400LV, FS4600G, FS309, PG680, PG690, PG690RC, PG6S, PG680RC, PG820, PG820RC, PG830, PG830RC, PG8D, PG8DR, PG8XR, CG200, and T4000GP — making it a versatile OEM replacement across the Husqvarna Construction surface preparation lineup. As a genuine OEM part, this lock washer meets the same manufacturing tolerances as the original hardware. DHS Equipment supplies this part to help keep your equipment running and your fastened assemblies secure.
Key Features
- Genuine OEM Hardened Construction — manufactured to Husqvarna's original material and dimensional specifications, ensuring the correct clamping load and resistance to loosening under vibration.
- Drop-In Hardware Replacement — matches the original mounting configuration exactly, fitting into existing fastener assemblies without any reworking of the host component.
- Broad Husqvarna Equipment Compatibility — fits floor saws including the FS400LV, FS4600G, and FS309; floor grinders including the PG680, PG690, PG820, PG830, and PG8XR series; the CG200 floor scarifier; and the T4000GP dust and slurry equipment.
- Fastener Integrity Under Load — a properly functioning lock washer prevents fastener back-out caused by the continuous vibration produced during cutting and grinding operations, keeping critical assemblies torqued to spec.
- Verified Part Number Cross-Reference — cross-reference 735216401 against your machine's parts diagram to confirm the correct application before installation.
A lock washer is a hardened fastening component placed beneath a nut or bolt head to resist rotational loosening caused by vibration and dynamic loads. In floor saws and floor grinders, where engines, belts, and grinding heads generate sustained vibration throughout operation, fastener back-out can lead to misaligned components, accelerated wear, or mechanical failure of surrounding parts. Replacing a worn or damaged lock washer with the correct OEM part restores proper clamping force to the assembly and ensures the machine continues to operate safely and within its designed tolerances.
Part Details
| Part Number | 735216401 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Lock Washer |
Compatibility & Fitment
| Name | Model |
|---|---|
| Dust & Slurry Equipment | T4000GP |
| Floor Saw | FS400LV |
| Floor Saw | FS4600G |
| Floor Grinder | PG680 |
| Floor Grinder | PG690RC |
| Floor Grinder | PG8DR |
| Floor Grinder | PG820 |
| Floor Grinder | PG820RC |
| Floor Grinder | PG830 |
| Floor Grinder | PG830RC |
| Floor Grinder | PG8XR |
| Floor Scarifier | CG200 |
| Floor Saw | FS309 |
| Floor Grinder | PG690 |
| Floor Grinder | PG6S |
| Floor Grinder | PG680RC |
| Floor Grinder | PG8D |
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.
