Description
Overview:
This screw is a genuine Husqvarna OEM fastener (MPN 503218874) used on selected professional and homeowner chainsaws. Made from robust steel for dependable clamping force, it is a machine screw designed to secure key assemblies and covers so components stay aligned and safe in operation. It is intended for Husqvarna chainsaws such as the 570II and 575XP, among others, and supports correct reassembly during servicing or repairs. Using the correct OEM screw helps maintain fit, thread engagement, and vibration resistance in high‐revving two‐stroke machinery. Suitable for routine maintenance or like‐for‐like replacement of a worn, missing, or damaged fastener, it provides a secure hold without compromising the tool's structure. Genuine part status ensures consistent dimensions and compatibility with the specified Husqvarna platforms.
Key Features:
- Genuine Husqvarna OEM part for direct fit and reliable compatibility
- Steel construction for strength under vibration and repeated use
- Precision-machined threads for consistent engagement and torque retention
- Suitable for high-vibration environments typical of chainsaw operation
- Helps maintain alignment of covers, housings, and mounted components
- Supports safe reassembly during servicing and routine maintenance
- Replaces a single fastener without modification to surrounding parts
- Supplied as an individual screw to match original fixing points
Typical Applications:
Used to secure chainsaw covers, guards, housings, and related assemblies where an OEM machine screw is specified. Ideal for replacing stripped, lost, or corroded fasteners during maintenance tasks such as cleaning, inspection, or part replacement, helping preserve structural integrity and reliable operation in forestry, landscaping, arborist work, and general property maintenance.
Also known as:
Chainsaw fixing screw, machine screw, retaining screw, cover screw, OEM fastener, Husqvarna bolt, replacement chainsaw screw, service screw, mounting screw, hardware fastener for Husqvarna chainsaws.
Fits Models:
390XP, 570, 570II, 575XP, 576XP, 576XP AutoTune, 576XPAutoTune, K650 Cut-n-Break, K650Cut-n-Break
Alternate Part Numbers:
503 21 88-74, 503218874
Product Specifications
| L&S Part No. | 503 21 88 74 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503218874 |
| Unit of Sale | 1 |
| Applications | 390XP, 570, 570II, 575XP, 576XP, 576XP AutoTune, 576XPAutoTune, K650 Cut-n-Break, K650Cut-n-Break |
| Machine Type | Chainsaws, Disc Cutters |
| Fits Brands | Husqvarna |
| Fits Models | K650 Cut-n-Break | 390XP | 570 | 570II | 576XP | 576XP AutoTune |
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