The Husqvarna 539990637 Bolt 3/8-16 X 2-1/2 is a genuine OEM fastener designed for Husqvarna floor saws including the FS4800D, FS6600D, FS6600DT, FS6600DJDT, FS6800D, FS8400D, FS3500E, Pro65G, and PRO65G. As a direct OEM replacement, this bolt is manufactured to the exact thread specification and dimensional tolerance required by the machine — 3/8-16 thread pitch at 2-1/2 inches in length — ensuring a secure, correctly torqued connection every time. Sourced directly from Husqvarna, this part carries the same specification as the hardware originally installed on the machine. DHS Equipment supplies this part to help keep your floor saw operating at full capacity.
Key Features
- Exact Thread and Length Specification — Manufactured to a precise 3/8-16 thread pitch and 2-1/2 inch length, matching the original hardware to the correct torque and clamping load.
- Genuine OEM Construction — Produced to Husqvarna's material and dimensional standards, ensuring correct tensile strength and thread engagement for structural fastener applications in floor saws.
- Direct Drop-In Replacement — Threads directly into existing mounting points with no rework or re-tapping required, restoring the assembly to its original specification.
- Broad Floor Saw Compatibility — Fits a wide range of Husqvarna walk-behind floor saws, including the FS4800D, FS6600D, FS6800D, FS8400D, FS3500E, and the Pro65G and PRO65G series.
- Structural Integrity Restored — A correctly specified fastener maintains proper joint preload across the assembly; an incorrect or worn bolt can allow movement, misalignment, or component loosening under the vibration loads typical of floor sawing.
A fastener like this bolt serves as a critical connection point within the floor saw's assembly, securing components under the sustained vibration and load generated during concrete or asphalt cutting. Using the correct thread pitch and length is essential — an undersized or incorrect-grade bolt may not achieve the clamping force needed to keep the assembly stable, while an oversized bolt risks thread damage or interference with adjacent components. Replacing a damaged or missing bolt with the correct OEM part restores the joint to its designed holding strength and keeps the machine operating as built.
For fitment questions or to cross-reference part number 539990637 against your parts diagram, contact the DHS Equipment team for assistance.
Part Details
| Part Number | 539990637 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Bolt 3/8-16 X 2-1/2 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Saw | FS4800D |
| Floor Saw | FS6600D |
| Floor Saw | FS6800D |
| Floor Saw | FS8400D |
| Floor Saw | FS3500E |
| Floor Saw | Pro65G |
| Floor Saw | FS6600DT |
| Floor Saw | FS6600DJDT |
| 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.
