Description
Overview:
This screw is a Genuine Husqvarna part designed to secure components on selected brushcutters and other Husqvarna machines. Built from hardened steel with a protective finish, it provides a strong, repeatable clamp and resists wear in demanding outdoor use. It is used to fasten housings, guards, covers, and other assemblies that are subject to vibration and high load during cutting and clearing work. Purpose-made for Husqvarna equipment, it helps maintain correct alignment and prevents loosening over time, supporting reliable performance and safe operation. Ideal for routine servicing and repairs on models such as the 135R and 535RJ, it restores the original specification and fit, ensuring parts stay in place and downtime is kept to a minimum.
Key Features:
- Genuine Husqvarna part for assured fit and performance
- Durable steel construction with protective coating for long service life
- Holds fast under vibration to help prevent loosening in use
- Precision thread for smooth installation and consistent torque
- Compatible with a wide range of Husqvarna brushcutters and power tools
- Suitable for routine maintenance and component replacement
- Helps maintain machine integrity, alignment, and safety
- Replaces Husqvarna part numbers 503 20 07-78 and 503200778
Typical Applications:
Used to secure guards, covers, housings, and bracketed parts on brushcutters, clearing saws, and selected Husqvarna cordless and corded machines. Common during blade/line head servicing, handlebar and shaft assembly maintenance, gearbox or clutch cover refitting, and general rebuilds where a dependable OEM fastener is required to keep assemblies tight and aligned.
Also known as:
OEM fixing screw, machine screw, retaining screw, Husqvarna fastener, equipment screw, assembly screw, replacement fixing, service screw, hardware fastener, securing screw, bolt (informal use).
Fits Models:
135R, 327RX, 335FR, 335RX, 336FR, 336FRD, 336RK, 355FRM, 355FX, 355FXT, 355RX, 520iLX, 520iRX, 530iP4, 530iPT5, 530iPX, 535LS, 535RJ, 535RX, 535RXT, 536 LiL, 536 LiLX, 536LiHE3, 536LiL, 536LiLX, 536LiP4, 536LiPT5, 536LiPX, 536LiR, 536LiRX, 555FRM, 555FX, 555FXT, 555RXT, DM 230, DM 280, DM 330, DM 340, DM230, DM280, DM330, DM340
Alternate Part Numbers:
503 20 07-78, 503200778
Product Specifications
| L&S Part No. | 503 20 07 78 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503200778 |
| Unit of Sale | 1 |
| Applications | 135R, 327RX, 335FR, 335RX, 336FR, 336FRD, 336RK, 355FRM, 355FX, 355FXT, 355RX, 520iLX, 520iRX, 530iP4, 530iPT5, 530iPX, 535LS, 535RJ, 535RX, 535RXT, 536 LiL, 536 LiLX, 536LiHE3, 536LiL, 536LiLX, 536LiP4, 536LiPT5, 536LiPX, 536LiR, 536LiRX, 555FRM, 555FX, 555FXT, 555RXT, DM 230, DM 280, DM 330, DM 340, DM230, DM280, DM330, DM340 |
| Machine Type | Brushcutters |
| Fits Brands | Husqvarna |
| Fits Models | 536LiHE3 | 536LiP4 | 536LiPT5 | 536LiPX | 135R | 327RX | 335FR | 335RX | 336FR | 336FRD, 336RK | 355FRM | 355FX | 355FXT | 355RX | 535LS | 535RJ | 535RX | 535RXT | 536LiR | 536LiRX | 555FRM | 555FX | 555FXT | 555RXT | 536 LiL | 536 LiLX | 530iPT5 | 536LiR | 536LiRX | 520iLX | 520iRX | DM 230 | DM 280 | DM 330 | DM 340 | 530iP4 | 530iPX |
