Description
Overview:
The Lock Nut M12 8 ZPB is a genuine Husqvarna fastener for securing key components on brushcutters and related machines. Made from high-strength steel with a corrosion‐resistant zinc plating, it uses an M12 metric thread for a precise fit and dependable clamp force. The prevailing‐torque design resists loosening under vibration, helping to keep cutting attachments and gearbox hardware firmly in place during demanding use. Ideal for routine maintenance or replacements, it supports reliable operation and helps extend service intervals. This nut is commonly used on Husqvarna brushcutters such as the 120R and 125RB, and across a wide range of compatible models. Genuine part status ensures correct specification, consistent quality, and compatibility with Husqvarna assemblies. OEM reference: 537 54 39-01.
Key Features:
- Genuine Husqvarna part for correct fit and performance
- M12 metric thread with precise tolerances for secure assembly
- Robust steel construction, strength class 8 for dependable clamp load
- Zinc-plated finish to resist rust and wear in outdoor conditions
- Prevailing‐torque lock action helps prevent loosening from vibration
- Suitable for securing cutting heads, blades, guards, and gearbox fixtures
- Stable fastening helps reduce rework and maintenance calls
- Compatible with a wide range of Husqvarna brushcutter and clearing saw models
- Simple to install using standard workshop tools
- OEM number 537 54 39-01 for easy identification and ordering
Typical Applications:
Used to fasten and retain components subject to vibration on Husqvarna brushcutters and clearing saws, including blade carriers, trimmer heads, guard brackets, and gearbox output fixtures. Suitable for routine servicing, rebuilds, or when replacing damaged or worn fasteners to restore safe and stable operation in landscaping, grounds maintenance, and forestry work.
Also known as:
Locking nut, self-locking nut, prevailing‐torque nut, M12 lock nut, secure nut, vibration‐resistant nut, steel locknut.
Fits Models:
120 L, 120 LC, 120L, 120LC, 120R, 125RB, 125RD, 132 L, 132 LD, 132L, 132LD, 132R, 132RB, 132RD, 132RJ, 142R, 142RJ, 152RJ, 23 L, 23 LC, 232 L, 232L, 232RD, 232RJ, 23L, 23LC, 23R, 240, 240F, 240R, 240RJ, 245, 245R, 245RX, 250R, 250RX, 252RX, 26 L, 26 LC, 265RX, 26L, 26LC, 26R, 32 BL, 32 BT, 32BL, 32BT
Alternate Part Numbers:
537 54 39-01, 537543901
Product Specifications
| L&S Part No. | 537 54 39 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 537543901 |
| Unit of Sale | 1 |
| Applications | 120 L, 120 LC, 120L, 120LC, 120R, 125RB, 125RD, 132 L, 132 LD, 132L, 132LD, 132R, 132RB, 132RD, 132RJ, 142R, 142RJ, 152RJ, 23 L, 23 LC, 232 L, 232L, 232RD, 232RJ, 23L, 23LC, 23R, 240, 240F, 240R, 240RJ, 245, 245R, 245RX, 250R, 250RX, 252RX, 26 L, 26 LC, 265RX, 26L, 26LC, 26R, 32 BL, 32 BT, 32BL, 32BT |
| Machine Type | Brushcutters |
| Fits Brands | Husqvarna |
| Fits Models | 120R | 125RB | 125RD | 132R | 132RB | 132RD | 132RJ | 142R | 142RJ | 152RJ | 23R | 232RD | 232RJ | 240 | 240F | 240R | 240RJ | 245 | 245R | 245RX | 250R | 250RX | 252RX | 26R | 265RX | 120 L | 120 LC | 132 L | 132 LD | 23 L | 23 LC | 232 L | 26 L | 26 LC | 32 BL | 32 BT |
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