AirCoat / PowrCoat part 0533441 is a cotter pin used to secure critical components on compatible sprayer models. This simple but essential fastener prevents nuts, pins, or shafts from loosening due to vibration during operation. Replacing a missing or damaged cotter pin restores proper retention and helps avoid unexpected mechanical failure.
| Part Number | 0533441 |
|---|---|
| Part Description | Cotter Pin |
| Brand | AirCoat / PowrCoat |
| Fits | AirCoat 423; PowrCoat 630 |
| Condition | New |
The 0533441 Cotter Pin is a small but vital fastener used on select AirCoat and PowrCoat airless sprayers. It is typically employed to secure castellated nuts, pivot pins, or other components that are subject to vibration during normal operation. When properly installed, the cotter pin prevents loosening and ensures that critical mechanical joints remain intact.
A missing, bent, or corroded cotter pin can lead to fastener back‑out, component misalignment, or even sudden failure of the affected assembly. Replacing the cotter pin with an OEM part restores original retention and helps maintain safe, reliable sprayer operation.
| Locking fastener | Prevents castellated nuts or clevis pins from rotating loose under vibration |
|---|---|
| Safety retention | Ensures critical joints remain engaged during operation |
| Simple replacement | Easy to inspect and replace during routine maintenance |
| Missing pin | Cotter pin has fallen out, leaving the fastener unsecured |
|---|---|
| Corrosion / rust | Heavy rust weakens the pin and may cause it to break |
| Bent or distorted | Pin no longer fits correctly or cannot be properly spread |
| Previous reuse | Cotter pins should always be replaced with new ones after removal |
Part 0533441 is a direct replacement cotter pin for the following models. Always confirm fitment using the correct parts diagram for your specific machine.
| Model | Component |
|---|---|
| AirCoat 423 | Cotter pin |
| PowrCoat 630 | Cotter pin |
When replacing a cotter pin, it’s often because the associated fastener or assembly was being serviced. These components are frequently addressed at the same time.
The nut that the cotter pin secures; may be reused if undamaged.
Inspect for wear or scoring when the cotter pin is removed.
Some assemblies use a combination of washers, nuts, and pins that should be replaced together.
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