Description
Overview:
This Square Nut for Husqvarna/Partner equipment is a genuine Husqvarna part designed to secure components reliably on professional and domestic machines. Built from durable metal, it provides a solid clamping surface and a square profile that seats neatly in slots or recesses to reduce spinning while tightening. It is used across cutting, forestry and robotic mowing ranges, including the K650 Active III cut-off saw and Automower 305. As an OEM fastener, it helps maintain the integrity of assemblies such as guards, covers, brackets and chassis fixings, supporting safe, long-lasting operation. If you are repairing, servicing or rebuilding compatible Husqvarna machines, this square nut offers the correct fit and performance expected from the original part.
Key Features:
- Genuine Husqvarna part for assured compatibility and fit
- Square profile helps prevent rotation in matching slots or recesses
- Durable metal construction for dependable clamping under vibration
- Precision-made to OEM tolerances for consistent assembly torque
- Suitable for high-vibration tools such as cut-off saws and power cutters
- Supports secure fastening of guards, housings, handles and brackets
- Straightforward to install using standard hand tools
- Helps maintain machine safety and performance over time
- Widely used across Husqvarna Automower and power cutter ranges
- Ideal as a like-for-like replacement during routine maintenance
Typical Applications:
Used to fasten protective guards, covers, brackets, handle assemblies and frame or body panels on compatible Husqvarna machines. Common in workshop repairs of cut-off saws, power cutters and stone/concrete tools, and in garden equipment servicing for Automower models where square nuts are required in bodywork, chassis and docking/base assemblies.
Also known as:
Square fixing nut, square profile nut, OEM fastener, retaining nut, hardware nut, assembly nut, square machine nut, Husqvarna nut 503226601.
Fits Models:
125BTs, 250PS, 268K, 272K, 3122K, 371K, 375K, 565, 570, 570II, 572XP, 572XPG, 576XP, 576XP AutoTune, 592 XP, 592XP, Automower 220 AC, Automower 220AC, Automower 230 ACX, Automower 230ACX, Automower 260 ACX, Automower 260ACX, Automower 265 ACX, Automower 265ACX, Automower 305, Automower 310, Automower 310 Mark II, Automower 310E NERA, Automower 315, Automower 315 Mark II, Automower 320, Automower 320 NERA, Automower 330X, Automower 405X, Automower 410XE NERA, Automower 415X, Automower 420, Automower 430X, Automower 430X NERA, Automower 430XH, Automower 435X AWD, Automower 440, Automower 450X, Automower 450X EPOS, Automower 450XH, Automower 450XH EPOS, Automower 520, Automower 520 EPOS, Automower 520H, Automower 520H EPOS, Automower 535 AWD, Automower 550, Automower 550 EPOS, Automower 550H EPOS, Automower Limited Edition, Automower Solar Hybrid, K1250, K1260, K1260 Rail, K1270, K1270 I, K1270 Rail I, K2500, K30, K40, K650 Active III, K950, K950 Rescue, PS50
Alternate Part Numbers:
503226601
Product Specifications
| L&S Part No. | 503 22 66 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503226601 |
| Unit of Sale | 1 |
| Applications | 125BTs, 250PS, 268K, 272K, 3122K, 371K, 375K, 565, 570, 570II, 572XP, 572XPG, 576XP, 576XP AutoTune, 576XPAutoTune, 592 XP, 592XP, Automower 220 AC, Automower 220AC, Automower 230 ACX, Automower 230ACX, Automower 260 ACX, Automower 260ACX, Automower 265 ACX, Automower 265ACX, Automower 305, Automower 310, Automower 310 Mark II, Automower 310E NERA, Automower 310ENERA, Automower 310MarkII, Automower 315, Automower 315 Mark II, Automower 315MarkII, Automower 320, Automower 320 NERA, Automower 320NERA, Automower 330X, Automower 405X, Automower 410XE NERA, Automower 410XENERA, Automower 415X, Automower 420, Automower 430X, Automower 430X NERA, Automower 430XH, Automower 430XNERA, Automower 435X AWD, Automower 435XAWD, Automower 440, Automower 450X, Automower 450X EPOS, Automower 450XEPOS, Automower 450XH, Automower 450XH EPOS, Automower 450XHEPOS, Automower 520, Automower 520 EPOS, Automower 520EPOS, Automower 520H, Automower 520H EPOS, Automower 520HEPOS, Automower 535 AWD, Automower 535AWD, Automower 550, Automower 550 EPOS, Automower 550EPOS, Automower 550H EPOS, Automower 550HEPOS, Automower Limited Edition, Automower Solar Hybrid, Automower SolarHybrid, K1250, K1260, K1260 Rail, K1260Rail, K1270, K1270 I, K1270 Rail I, K1270I, K1270RailI, K2500, K30, K40, K650 Active III, K650ActiveIII, K950, K950 Rescue, PS50 |
| Machine Type | Disc Cutters, Automowers |
| Fits Brands | Husqvarna |
| Fits Models | K950 | K1250 | K1260 | K1270, K1270 | 3122K | K1260 Rail | K2500 | K30 | K40 | K950 Rescue | PS50 | 250PS | 565 | 570 | 570II | 572XP, 572XPG | 576XP | 268K | 272K | 371K | 125BTs | Automower 420 | Automower 430X | Automower 430XH | Automower 220 AC | Automower 440 | Automower 230 ACX | Automower 260 ACX | Automower 450X | Automower 265 ACX | Automower 450XH | Automower 520 | Automower 310 | Automower 550 | Automower 315 | Automower 320 | Automower 330X | Automower Solar Hybrid | 592 XP | Automower 405X | Automower 415X | AUTOMOWER 305 | Automower 520H EPOS | AUTOMOWER 310 Mark II | Automower 310E NERA | Automower 315 Mark II | Automower 320 NERA | Automower 410XE NERA | Automower 430X NERA | Automower 435X AWD | Automower 450X EPOS | Automower 450XH EPOS | Automower 520 EPOS | Automower 520H | Automower 535 AWD | Automower 550 EPOS | Automower 550H EPOS | Automower Limited Edition | 576XP AutoTune | K1270 I | K1270 Rail I | 375K |
