The Graco 100186 Internal Tooth Lock Washer ensures a secure grip on vibration-prone assemblies. Commonly used across Graco sprayers and proportioners for reliable fastener retention.
The Graco 100186 Internal Tooth Lock Washer appears across multiple Graco product families. Below are common assemblies/models where this washer is called out in Graco parts manuals. Always confirm with your machine’s specific parts list before ordering.
The Graco 100186 Internal Tooth Lock Washer is a serrated inner-diameter lock washer designed to resist loosening from vibration. The internal “teeth” bite against the mating surface or fastener head, improving retention in high-vibration applications common to airless sprayers, proportioners, and surface-prep equipment.
| Attribute | Details |
|---|---|
| Graco Part # | 100186 |
| Type | Internal Tooth Lock Washer (serrated I.D.) |
| Typical Usage | Bracket mounts, air control panels, drum/cutter stacks, electrical/grounding fastener stacks, and other vibration-prone joints. |
| Typical Size Callout (example) | Appears as 5/16" I.D. in certain Graco package/manual callouts (verify your model’s diagram). |
| Interchange/Notes | Use only where your parts list specifies 100186; do not substitute external-tooth or split-lock types unless the manual permits. |
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