

Genuine Graco 104034 Plain Washer — flat washer used to distribute clamp load and protect surfaces in select Graco assemblies. Verify by part number in your model’s parts list.
The Graco 104034 Plain Washer is a flat washer used across various Graco assemblies to distribute clamp load and protect mounting surfaces. Use this listing to verify fitment against your machine’s parts manual before ordering.
| Assembly / System | Reference (Example Manual/Item) | Notes |
|---|---|---|
| Gun Flush Box Module (PrecisionMix) | Graco parts list (example listing for “washer, plain, 5/16”) | Appears as a flat washer used in the module hardware stack-up. Verify item callout against your module revision. |
| ThermoLazer / ProMelt Line Striping Systems | ThermoLazer parts manuals (selected models) | Listed as a plain washer in multiple hardware locations. Check the exact diagram for your TL series model. |
| Part Number | 104034 |
|---|---|
| Description | Plain Washer, flat type for general hardware load distribution |
| Nominal Size | 5/16" (as commonly referenced in related Graco module diagrams) |
| Typical Use | Under bolt/nut heads to spread clamp load and protect painted or machined surfaces |
| Interchange | Use exact Graco part no. match. Do not substitute if your manual specifies 104034. |