Description
Overview:
This genuine Husqvarna hex nut is an OEM replacement fastener for floor saws and related machines, built to match factory specifications for the correct thread and seating. Made from robust steel with a corrosion‐resistant finish, it provides dependable clamping force to keep assemblies secure during heavy use. It is designed for Husqvarna floor saws such as the FS 400 and FS 500 E, and is suitable for a range of other compatible models listed below. Use it to restore secure fastening wherever the original nut has worn, loosened, or been lost, helping maintain cutting accuracy, safety, and reliability in demanding site and workshop conditions. Genuine Husqvarna quality ensures consistent fit and performance over time.
Key Features:
- Genuine Husqvarna part for assured compatibility and longevity (OEM No. 731 71 20-51)
- Precision thread and hex profile for a correct, repeatable fit
- Durable steel construction with corrosion‐resistant finish for site conditions
- Holds firmly under vibration and load typical of floor saw operation
- Direct replacement component to restore original fastening performance
- Suitable for FS 400 and FS 500 E, plus other Husqvarna models listed
- Supports routine servicing and specific repairs across multiple assemblies
- Simple to fit with standard hand tools (e.g. spanner) to manufacturer torque settings
Typical Applications:
General OEM fastening on Husqvarna floor saws and compatible machines, such as securing guards, covers, brackets, housings, and other structural or drive‐related assemblies. Ideal when replacing missing or damaged nuts during blade changes, belt and pulley maintenance, frame work, or engine and accessory refits to keep equipment safe and reliable on site.
Also known as:
Hex nut, fixing nut, retaining nut, machine nut, OEM fastener, replacement nut for floor saw assemblies.
Fits Models:
142R, 142RB, 142RJ, 143R, 152RB, 152RJ, 153R, FS 3500 G, FS 3500 G II, FS 400, FS 400 LV, FS 400 OLV, FS 500 E, FS 5000, FS 600 E, FS 7000, FS 7000 DL, FS 7000 DMT, MS 610
Alternate Part Numbers:
731 71 20-51, 731712051
Product Specifications
| L&S Part No. | 731 71 20 51 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 731712051 |
| Unit of Sale | 1 |
| Applications | 142R, 142RB, 142RJ, 143R, 152RB, 152RJ, 153R, FS 3500 G, FS 3500 G II, FS 400, FS 400 LV, FS 400 OLV, FS 500 E, FS 5000, FS 600 E, FS 7000, FS 7000 DL, FS 7000 DMT, FS3500 G, FS3500 G II, FS3500G, FS3500GII, FS400, FS400 LV, FS400LV, FS400OLV, FS5000, FS500E, FS600E, FS7000, FS7000 DL, FS7000 DMT, FS7000DL, FS7000DMT, MS 610, MS610 |
| Machine Type | Floor Saws |
| Fits Brands | Husqvarna |
| Fits Models | FS400 | 142R | 142RB | 142RJ | 143R | 152RB | 152RJ | 153R | FS3500 G | FS400 LV | FS5000 | FS7000 | FS7000 DL | FS7000 DMT | FS 500 E | FS 600 E | FS3500 G II | MS 610 |
