The Husqvarna 539977761 Screw Hex Head 1/4-20 x 1 Gr5 is a genuine OEM fastener designed for Husqvarna power packs and floor saws, including the PP2525DS, PP2525DTR, PP3030, FS4600G, Pro65G, and RS8500D. As a factory-original component, this screw is manufactured to Husqvarna's exact thread and grade specifications, ensuring a proper, secure fit wherever it is called out in the assembly. DHS Equipment supplies this part to help keep your equipment running with the correct hardware at every service point. Cross-reference part number 539977761 against your parts diagram to confirm the correct application before ordering.
Key Features
- Grade 5 Tensile Strength — Manufactured to Grade 5 standards, delivering the clamping force and shear resistance required in demanding power pack and floor saw assemblies.
- Exact Thread Specification — Cut to a 1/4-20 thread pitch and 1-inch length, this screw seats flush and engages fully without any modification to mating components.
- Genuine OEM Quality — Produced as a Husqvarna factory original, this fastener meets the same material and dimensional tolerances as the hardware installed at the point of manufacture.
- Broad Fitment Across Two Equipment Classes — Compatible with PP2525DS, PP2525DTR, and PP3030 power packs as well as FS4600G, Pro65G, and RS8500D floor saws, covering a wide range of Husqvarna Construction equipment.
- Structural Integrity Restored — Using the correct grade and size fastener prevents joint loosening, vibration-induced fatigue, and premature wear on threaded bosses — keeping assemblies secure under continuous load.
A hex head screw at Grade 5 rating serves as a structural fastener within the machine's assembly, providing the clamping force needed to hold covers, brackets, and component housings in place under operational vibration and load. The 1/4-20 thread profile and 1-inch body length are engineered to match the specific boss depth and clearance of each mounting point where this fastener is specified. Using an incorrect grade or size can lead to joint loosening, thread stripping, or component misalignment — making the correct OEM replacement essential for maintaining assembly integrity.
Part Details
| Part Number | 539977761 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Screw Hex Head 1/4-20 x 1 Gr5 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Pack | PP2525DS |
| Power Pack | PP3030 |
| Floor Saw | FS4600G |
| Floor Saw | Pro65G |
| Floor Saw | RS8500D |
| Power Pack | PP2525DTR |
| 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.
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