

The Graco 156306 Flat Washer is a genuine OEM hardware part designed for stability and secure assembly in Graco airless sprayers. It ensures even pressure distribution and long-term reliability.
This OEM washer appears across multiple Ultra / Ultra Max II platforms. Always confirm with your model’s parts manual before ordering.
| Part Number | 156306 |
|---|---|
| Item Name | Graco 156306 Flat Washer |
| Brand / Type | Graco OEM — Flat Washer (hardware/fastener) |
| Function | Distributes bolt/screw load, protects surfaces, and helps maintain clamp force. |
| Where It’s Used | Common in frame, pump, and handle assemblies on select Ultra / Ultra Max II sprayers. |
| Package Contents | 1 × Flat Washer |