The Husqvarna 542166256 Lock Nut is a genuine OEM replacement designed for the CRT48 and CRT36 power trowels and the FS6600D floor saw. As a direct Husqvarna OEM component, this lock nut is manufactured to the same specifications as the original hardware, ensuring correct thread engagement and holding force for the application. Cross-reference part number 542166256 against your parts diagram to confirm the correct position before ordering. DHS Equipment supplies this part to help keep your equipment running.
Key Features
- OEM Thread and Torque Specification — manufactured to Husqvarna's original thread pitch and material grade, delivering the clamping force the assembly requires rather than an approximation.
- Drop-In Hardware Replacement — matches the original fastener dimensions exactly, so installation is straightforward with no reworking of mating components.
- Broad Equipment Compatibility — fits the CRT48 and CRT36 power trowels as well as the FS6600D floor saw, covering two distinct equipment families with a single part.
- Structural Integrity Where It Counts — a correctly specified lock nut resists vibration-induced loosening during operation, keeping critical assemblies secure throughout demanding work cycles.
- Genuine Husqvarna OEM Part — sourced directly through authorized channels, this component carries the same part number used in Husqvarna's official parts catalog for verified fitment accuracy.
A lock nut is a fastener engineered to resist self-loosening under the sustained vibration and dynamic loads that construction equipment generates during normal operation. Unlike a standard nut, its locking feature — whether a nylon insert, distorted thread, or prevailing-torque design — maintains clamping force even as the machine cycles through repeated stress. When a lock nut wears, stretches, or is replaced with an incorrect specification, the assembly it secures can shift or come loose, leading to accelerated wear on surrounding components and potential operational failure.
Part Details
| Part Number | 542166256 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Lock Nut |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Trowel | CRT48 |
| Floor Saw | FS6600D |
| Power Trowel | CRT36 |
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.
