The Husqvarna 539101331 Nut 1/2-13 Hex Nyloc is a genuine OEM fastener designed for a wide range of Husqvarna floor saws, tile and masonry saws, and power packs. This nut fits models including the FS4600G, FS4800D, FS5000D, FS6600D, FS6800D, FS7000D, FS7000DL, FS7000DMT, FS8400D, MS510, MS510G, PP2525DTR, PP2525DS, and PP3030, among others. As a genuine OEM component, it is manufactured to Husqvarna's exact specifications, ensuring correct thread engagement and clamping load every time. DHS Equipment supplies this part to help keep your equipment running at full capacity.
Key Features
- OEM Thread Integrity — Manufactured to Husqvarna's exact 1/2-13 UNC thread specification, ensuring full thread engagement and correct clamping torque without the risk of cross-threading or underperformance.
- Nylon Insert Locking — The integrated nylon collar grips the bolt shank under vibration, preventing self-loosening during heavy-duty cutting and compaction operations.
- Broad Model Compatibility — Confirmed fitment across the FS-series floor saws, MS510 and MS510G tile and masonry saws, and PP-series power packs, covering a wide range of Husqvarna construction equipment.
- Direct Drop-In Replacement — Matches the original fastener dimensions exactly, allowing straightforward installation with standard hand tools and no rework to mating hardware.
- Structural Fastener Reliability — A correctly specified nyloc nut maintains the clamping force that holds critical assemblies in alignment; a worn or missing nut can allow components to shift under load, affecting cut quality and machine safety.
A hex nyloc nut is a standard hex nut fitted with a nylon insert at the top of the nut body. When threaded onto a bolt, the nylon collar deforms slightly around the bolt thread, creating a friction lock that resists loosening caused by vibration and dynamic loads — conditions common in floor sawing and power cutting operations. Unlike standard hex nuts, a nyloc nut does not rely solely on torque to stay in place, making it the preferred fastener in assemblies subject to continuous machine vibration. When this nut is worn, damaged, or missing, the joint it secures can work loose over time, leading to misalignment, accelerated wear on surrounding components, or unsafe operating conditions.
Part Details
| Part Number | 539101331 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Nut 1/2-13 Hex Nyloc |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Pack | PP2525DTR |
| Floor Saw | FS4600G |
| Floor Saw | FS4800D |
| Floor Saw | FS5000D |
| Floor Saw | FS6600D |
| Floor Saw | FS6800D |
| Floor Saw | FS7000D |
| Floor Saw | FS7000DL |
| Floor Saw | FS8400D |
| Floor Saw | FS7000DMT |
| Tile & Masonry Saw | MS510 |
| Floor Saw | FS5000 |
| Floor Saw | FS6600DT |
| Floor Saw | FS6600DJDT |
| Floor Saw | PRO65G |
| Floor Saw | RS8500D |
| Floor Saw | Pro65G |
| Tile & Masonry Saw | MS510G |
| Power Pack | PP2525DS |
| Power Pack | PP3030 |
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.
