The Husqvarna 539991003 Hex Head Screw 1/4-20 x 1-3/4 is a genuine OEM fastener designed for the RS8500D floor saw. As a factory-sourced component, this screw is manufactured to Husqvarna's exact thread pitch, diameter, and length specifications, ensuring a secure, rattle-free connection in its designated assembly. Cross-reference part number 539991003 against your RS8500D parts diagram to confirm the correct application before installation. DHS Equipment supplies this part to help keep your equipment running at full capacity.
Key Features
- OEM Thread and Dimensional Accuracy — Manufactured to Husqvarna's specified 1/4-20 thread form and 1-3/4-inch length, so the fastener engages fully and torques correctly in its mating thread without risk of cross-threading or under-engagement.
- Direct Drop-In Replacement — Matches the original fastener profile exactly, fitting the same hole pattern and seating depth as the factory-installed screw on the RS8500D.
- RS8500D Floor Saw Compatibility — Sourced specifically for the RS8500D floor saw, a heavy-duty slab-cutting machine where fastener integrity is critical to keeping assemblies properly secured under load and vibration.
- Structural Integrity Under Vibration — A correctly sized hex head screw maintains clamping force across the assembly during the high-vibration demands of concrete cutting, preventing component shift or loosening mid-operation.
- Genuine Husqvarna OEM Part — Supplied directly from Husqvarna's parts catalog, ensuring the grade, finish, and geometry meet the same standards as the screw originally installed at the factory.
A hex head screw of this specification serves as a primary fastener holding structural or component assemblies together on the RS8500D floor saw. Its 1/4-20 thread and 1-3/4-inch length are matched to the clamping depth and load requirements of the joint it secures. When a fastener is damaged, stripped, or missing, the affected assembly can shift or come loose during operation, creating both a performance issue and a potential safety concern — making an exact-spec replacement the correct course of action rather than a substitute fastener from general stock.
Part Details
| Part Number | 539991003 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Hex Head Screw 1/4-20 x 1-3/4 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Saw | RS8500D |
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.
