Part number 2359803 is a genuine hexagon socket head cap screw used in Elite 5500 and PowrLiner 4500/5500 airless sprayers. This high-strength fastener features a hexagon socket drive for positive engagement with standard Allen keys, allowing precise torque application during assembly. It is manufactured to exact factory specifications for thread pitch, length, and hardness, ensuring proper clamping force and reliable component retention. Using the correct OEM fastener prevents loosening from vibration and maintains the structural integrity of the sprayer.
| Part Number | 2359803 |
|---|---|
| Part Description | Hexagon Socket Head Cap Screw |
| Brand |
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| Fits |
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| Condition | New |
The 2359803 Hexagon Socket Head Cap Screw is a genuine OEM fastener designed for Elite 5500 and PowrLiner 4500/5500 airless sprayers. This precision-machined screw features a hexagon socket drive that allows for secure engagement with standard Allen keys or hex drivers, enabling precise torque control during installation and maintenance.
Manufactured from high-strength steel with appropriate plating for corrosion resistance, this cap screw is designed to withstand the vibration, pressure cycles, and environmental conditions common in sprayer operation. It is used to secure critical components such as pump mounts, motor brackets, handle assemblies, covers, and fluid section components. Using the correct factory-spec screw is essential to maintain proper clamping force, prevent loosening, and avoid damage to threaded holes or components.
A damaged, stripped, or missing cap screw can lead to component misalignment, increased vibration, fluid leaks, and potential failure of critical assemblies. Replacing worn or damaged fasteners with this genuine part ensures reliable reassembly and long-term durability.
| Component retention | Securely fastens pumps, motors, covers, and handles |
|---|---|
| Vibration resistance | Proper thread engagement prevents loosening during operation |
| Precise clamping force | Socket head design allows accurate torque application |
| Structural integrity | Maintains proper alignment of critical assemblies |
| Stripped threads | Screw will not tighten properly or spins freely |
|---|---|
| Missing screws | Fastener lost during disassembly or service |
| Corrosion / rust | Screw head or threads corroded, making removal difficult |
| Cam-out / damaged head | Hex socket worn and tool no longer engages securely |
Part 2359803 is designed for the following sprayer models. Always verify your machine's parts diagram to confirm correct fitment.
| Brand / Model | Component |
|---|---|
| Elite 5500 | Hexagon Socket Head Cap Screw |
| PowrLiner 4500 | Hexagon Socket Head Cap Screw |
| PowrLiner 5500 | Hexagon Socket Head Cap Screw |
When replacing cap screws, it's good practice to inspect these related components, as they often wear out or become damaged at the same time.
Flat or lock washers used with these screws may be crushed or worn. Replace them to maintain proper clamping force.
If threads in the mating component are damaged, a thread repair insert or replacement nut may be needed.
Inspect plastic or metal covers for cracks around mounting holes that may have contributed to screw loosening.
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