Description
Overview:
This Genuine Husqvarna screw is an OEM fastener designed for securing assemblies on a wide range of Husqvarna chainsaws and clearing saws. Made from durable steel for strength and reliability under vibration, it helps maintain the structural integrity of covers, housings and other components as specified by the manufacturer. It provides a consistent fit that supports safe, efficient operation in demanding outdoor conditions. Suitable for popular models such as the 357XP and 455 Rancher, it is a direct replacement that matches the original factory specification for thread and head profile. Supplied under Husqvarna's part numbers 503 21 70‐10 and 503217010, this screw is a practical choice for routine servicing, repairs, or replacing missing hardware to keep your machine working as intended.
Key Features:
- Genuine Husqvarna OEM part for assured compatibility and fit
- Steel construction for strength and dependable clamping under vibration
- Precision-made threads to match factory components and prevent cross‐threading
- Reliable retention to help keep covers and assemblies secure in use
- Easy to install using standard hand tools, following the service manual
- Suitable for routine maintenance or replacing lost or damaged fixings
- Supports machine longevity by maintaining correct assembly integrity
- Supplied under Husqvarna reference 503 21 70‐10 / 503217010
Typical Applications:
Used wherever specified by Husqvarna on compatible machines, including securing starter housings, shrouds, guards, handles, and other body or engine components. Ideal for workshop repairs, scheduled maintenance, or replacing missing fasteners after heavy use in forestry, landscaping, and construction environments.
Also known as:
Machine screw, OEM fastener, fixing bolt, service screw, body screw, cover screw, engine housing screw, replacement fastener, chainsaw fixing.
Fits Models:
135, 135E, 135E TrioBrake, 135ETrioBrake, 140E, 140E TrioBrake, 140ETrioBrake, 340, 340E, 343F, 343FR, 343FRM, 343R, 345, 345E, 345E TrioBrake, 345ETrioBrake, 345FR, 345FX, 345FXT, 345R, 345RX, 346XP, 346XP TrioBrake, 346XPTrioBrake, 350, 351, 353, 353 TrioBrake, 353TrioBrake, 355FX, 355FXT, 357XP, 359, 435, 435E, 435EII, 435II, 440E, 440E TrioBrake, 440EII, 440ETrioBrake, 440II, 445, 445E, 445E TrioBrake, 445EII, 445ETrioBrake, 445II, 450, 450EII, 455 Rancher, 455 Rancher II, 455 RancherII, 455E, 455E Rancher II, 455E Rancher II TrioBrake, 455E TrioBrake, 455ERancherII, 455ETrioBrake, 460, 461, 465 Rancher II, 465RancherII, 545 TrioBrake, 545F, 545FR, 545FX, 545FXAT, 545FXT, 545FXTAT, 545RX, 545RXT, 545RXTAT, 545TrioBrake, 550XP TrioBrake, 550XPG TrioBrake, 550XPGTrioBrake, 550XPTrioBrake, 555FX, 555FXT
Alternate Part Numbers:
503 21 70-10, 503217010
Product Specifications
| L&S Part No. | 503 21 70 10 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503217010 |
| Unit of Sale | 1 |
| Applications | 135, 135E, 135E TrioBrake, 135ETrioBrake, 140E, 140E TrioBrake, 140ETrioBrake, 340, 340E, 343F, 343FR, 343FRM, 343R, 345, 345E, 345E TrioBrake, 345ETrioBrake, 345FR, 345FX, 345FXT, 345R, 345RX, 346XP, 346XP TrioBrake, 346XPTrioBrake, 350, 351, 353, 353 TrioBrake, 353TrioBrake, 355FX, 355FXT, 357XP, 359, 435, 435E, 435EII, 435II, 440E, 440E TrioBrake, 440EII, 440ETrioBrake, 440II, 445, 445E, 445E TrioBrake, 445EII, 445ETrioBrake, 445II, 450, 450EII, 455 Rancher, 455 Rancher II, 455 RancherII, 455E, 455E Rancher II, 455E Rancher II TrioBrake, 455E TrioBrake, 455ERancherII, 455ETrioBrake, 460, 461, 465 Rancher II, 465RancherII, 545 TrioBrake, 545F, 545FR, 545FX, 545FXAT, 545FXT, 545FXTAT, 545RX, 545RXT, 545RXTAT, 545TrioBrake, 550XP TrioBrake, 550XPG TrioBrake, 550XPGTrioBrake, 550XPTrioBrake, 555FX, 555FXT |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 340 | 135 | 135E | 135E TRIOBRAKE | 140E | 140E TRIOBRAKE | 340E | 345 | 345E | 345E TRIOBRAKE | 346XP | 346XP TRIOBRAKE | 350 | 351 | 353 | 353 TRIOBRAKE | 357XP | 359 | 435 | 435E | 435EII | 435II | 440E | 440EII | 440E TRIOBRAKE | 440II | 445 | 445E | 445EII | 445E TRIOBRAKE | 445II | 450 | 450EII | 455E | 455E RANCHER II | 455E RANCHER II TRIOBRAKE | 455E TRIOBRAKE | 455 RANCHER | 455 RANCHER II | 460 | 461 | 465 RANCHER II | 545 TRIOBRAKE | 550XP TRIOBRAKE | 343F | 343FR | 343R | 345FR | 345FX | 345FXT | 345R | 345RX | 355FX | 355FXT | 545FR | 545FX | 545FXAT | 545RX | 545RXT | 545RXTAT | 555FX | 555FXT | 545FXT | 545FXTAT | 550XPG Triobrake | 545F | 343FRM |
