Description
Overview:
The MT6x23/8 Screw for Husqvarna 435 and 445 chainsaws is a genuine Husqvarna fastener designed for secure assembly of key components exposed to vibration and heavy use. Manufactured from strong steel to offer dependable clamping force, it helps maintain correct alignment of housings, covers and internal parts for consistent cutting performance. This OEM part (503 21 51-03) is engineered for a precise fit on Husqvarna platforms and selected partner models, supporting reliable maintenance and like-for-like replacement. Suitable for use during repairs or routine servicing, it provides the correct specification and length for the application, helping reduce the risk of loosening in service. Ideal for Husqvarna 435 and 445 users who want original build quality and compatibility without modification.
Key Features:
- Genuine Husqvarna part for factory-correct fit and performance (OEM 503 21 51-03)
- Steel construction for strength and long service life in high-vibration environments
- Precision-machined to suit the intended thread and seating depth on listed models
- Helps maintain secure assemblies such as covers, guards and chassis components
- Direct replacement to simplify repairs and reduce downtime
- Compatible with multiple Husqvarna, Jonsered and Zenoah models where specified
- Suitable for routine servicing or rebuilds to keep machines working reliably
- Supplied to original specification for consistent tightening and retention
Typical Applications:
Used during assembly and maintenance of compatible chainsaws to secure components such as recoil and clutch covers, handle frames, chassis sections and other serviceable parts. Suitable for restoring lost or damaged screws or when reassembling after cleaning, inspection or part replacement, helping ensure stable operation and correct alignment under load.
Also known as:
Chainsaw assembly screw, mounting screw, fixing screw, Husqvarna screw 503 21 51-03, chainsaw service fastener, OEM screw for Husqvarna platforms, replacement screw for covers and housings.
Fits Models:
135, 135E, 140E, 435, 435E, 435EII, 435II, 440E, 440EII, 440II, 445, 445E, 445EII, 445II, 450, 450EII, CS2245, CS2250, GZ381, Husqvarna 435
Alternate Part Numbers:
503 21 51-03, 503215103
Product Specifications
| L&S Part No. | 503 21 51 03 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503215103 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Key Features | - Genuine Husqvarna part for factory-correct fit (OEM 503 21 51-03) - Steel construction for strength in high-vibration environments - Precision-machined for intended thread and seating depth - Direct replacement simplifies repairs and reduces downtime - Compatible with Husqvarna, Jonsered, and Zenoah models |
| Fits Models | 135 | 135E | 140E | 435 | 435E | 435EII | 435II | 440E | 440EII | 440II | 445 | 445E | 445EII | 445II | 450 | 450EII |
