The Husqvarna 539300256 Nut 5/8-11 Nyloc is a genuine OEM fastener designed for the PP2525DS, PP2525DTR, PP3030, and PRO65G equipment lines, including the RS8500D floor saw. As a direct Husqvarna OEM component, this nut is manufactured to the exact thread specification and locking performance required by the original assembly. DHS Equipment supplies this part to help keep your equipment running with the correct hardware it was built with. Cross-reference part number 539300256 against your parts diagram to confirm fitment before ordering.
Key Features
- OEM-Grade Nylon Insert Locking — The nylon insert collar grips the thread and resists vibration-induced loosening, maintaining secure clamping force under the dynamic operating loads typical of power packs and floor saws.
- Correct 5/8-11 Thread Specification — Cut to the UNC 5/8-11 standard, this nut engages the mating stud or bolt exactly as the original fastener did, with no chasing or rework required on the thread.
- Broad Equipment Compatibility — Fits multiple Husqvarna platforms including the PP2525DS, PP2525DTR, and PP3030 power packs, as well as the RS8500D and PRO65G floor saws.
- Structural Integrity Restored — A worn, stripped, or damaged nyloc nut can allow critical assemblies to shift under load. Replacing it with this genuine OEM part restores the clamping integrity the manufacturer designed into the joint.
- Genuine Husqvarna OEM Part — Sourced directly from Husqvarna's construction equipment parts program, this fastener meets the same material and dimensional standards as the hardware installed at the factory.
A nyloc nut — short for nylon-insert locking nut — uses a ring of nylon bonded into the top of the nut body to create friction against the bolt thread when tightened. This friction prevents the nut from backing off under vibration, which makes it a preferred fastener anywhere a standard nut could work loose during operation. On power packs and floor saws, where engines, hydraulic systems, and rotating components generate continuous vibration, the integrity of every locking fastener directly affects the safety and stability of the assembly. A stripped or missing nyloc nut in a critical joint can allow components to shift, creating misalignment or structural failure at the connection point.
Part Details
| Part Number | 539300256 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Nut 5/8-11 Nyloc |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Pack | PP2525DS |
| Floor Saw | RS8500D |
| Power Pack | PP2525DTR |
| Power Pack | PP3030 |
| Floor Saw | PRO65G |
| 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.
