Part 0509550 is a hexagonal washer cap screw used as a structural fastener on a wide range of Advantage, GPX/EPX, Impact, PowrLiner, RentSpray, and SprayTech GPX/LCX sprayers. The integrated washer helps distribute clamping force evenly, supporting secure mounting and resistance to loosening during operation.
| Part Number | 0509550 |
|---|---|
| Part Description | Hexagonal Washer Cap Screw |
| Category | Fasteners / Mounting Hardware |
| Fits | Advantage Series; GPX / EPX Series; Impact Series; PowrLiner Series; RentSpray Series; SprayTech GPX & LCX Series |
| Condition | New |
The 0509550 Hexagonal Washer Cap Screw is a mounting fastener used on multiple airless sprayer platforms. The integrated washer provides a larger bearing surface to help maintain clamping force and reduce loosening caused by vibration and pump cycling.
Fasteners can stretch, corrode, or lose holding strength over time. Replacing worn or damaged screws helps maintain structural integrity and proper component alignment.
| Component retention | Secures mounted components to frames or housings |
|---|---|
| Load distribution | Integrated washer spreads clamping force evenly |
| Vibration resistance | Helps reduce loosening during operation |
| Thread damage | Stripped or deformed threads |
|---|---|
| Corrosion | Rust or degraded finish |
| Loose mounting | Fastener no longer holds torque |
| Repeated service | Removed multiple times during maintenance |
Part 0509550 is compatible with the following models. Always confirm fitment using the correct parts diagram for your exact model and revision.
| Model | Component |
|---|---|
| Advantage 400 | Hexagonal Washer Cap Screw (0509550) |
| Advantage 500 | Hexagonal Washer Cap Screw (0509550) |
| Advantage GPX 130 | Hexagonal Washer Cap Screw (0509550) |
| Advantage GPX 165 | Hexagonal Washer Cap Screw (0509550) |
| Advantage GPX 220 | Hexagonal Washer Cap Screw (0509550) |
| Advantage GPX 85 | Hexagonal Washer Cap Screw (0509550) |
| Impact 410 | Hexagonal Washer Cap Screw (0509550) |
| PowrLiner 1800M | Hexagonal Washer Cap Screw (0509550) |
| PowrLiner 2800M | Hexagonal Washer Cap Screw (0509550) |
| RentSpray 400 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech Airless Advantage EPX 2155 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech Airless Advantage EPX 2255 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech GPX 130 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech GPX 165 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech GPX 220 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech GPX 750 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech GPX 80 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech GPX 1250 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech GPX 1600 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech GPX 85 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech LCX 750 | Hexagonal Washer Cap Screw (0509550) |
| SprayTech LCX 130 | Hexagonal Washer Cap Screw (0509550) |
Inspect brackets for wear or deformation when replacing fasteners.
Lock washers or thread-locking methods may be used where vibration is high.
Damaged threads should be repaired to maintain proper clamping force.
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