Description
Overview:
This lock washer is a Genuine Husqvarna part designed to secure fasteners on compatible hedge trimmers, helping prevent loosening under vibration and repeated use. Made from durable steel, it provides consistent clamping force between a nut or bolt head and the mating surface, maintaining a reliable connection around moving assemblies and housings. It is engineered for Husqvarna battery hedgetrimmers, including models such as 536LiHD60X and 536LiHD70X. Identified by Manufacturer Part Number (MPN) 578 05 49-01 (578054901), it is suitable for routine maintenance or repairs where a locking action is required to keep components tight and safe. Using the correct genuine washer helps protect threads, reduces re-tightening intervals, and supports long service life of the machine.
Key Features:
- Genuine Husqvarna part for correct fit and dependable performance
- Steel construction for strength and wear resistance in high-vibration areas
- Helps prevent fasteners from backing off during operation
- Supports safe, stable assemblies on gearbox covers, handles, and guards
- Precisely matched to Husqvarna hedgetrimmer hardware for consistent results
- Simple to fit with standard hand tools; no modification required
- Corrosion-resistant finish to aid longevity in outdoor conditions
- Replaces worn or missing washers to restore proper clamping force
Typical Applications:
Used wherever a secure locking action is needed on Husqvarna hedge trimmers, such as mounting screws for gear housings, handle frames, and protective covers. Ideal during blade service, vibration-related checks, or after disassembly for cleaning. Suitable for preventative maintenance to reduce unplanned loosening and to keep fasteners torqued correctly during regular trimming tasks.
Also known as:
Spring washer, star washer, anti-vibration washer, locking washer, lock ring washer, hedge trimmer lock washer, securing washer, split-type washer.
Fits Models:
520iHD60, 520iHE3, 520iHT4, 536LiHD60X, 536LiHD70X, 536LiHE3
Alternate Part Numbers:
578 05 49-01, 578054901
Product Specifications
| L&S Part No. | 578 05 49 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 578054901 |
| Unit of Sale | 1 |
| Applications | 520iHD60, 520iHE3, 520iHT4, 536LiHD60X, 536LiHD70X, 536LiHE3 |
| Machine Type | Cordless Hedgetrimmers, Hedgetrimmers |
| Fits Brands | Husqvarna |
| Fits Models | 536LiHD60X | 536LiHD70X | 536LiHE3 | 520iHE3 | 520iHT4 | 520iHD60 |
