

SprayTech part 0090512 is a Star Washer used in SprayTech Airless EP2205, EP2105, and ED1150 sprayers. This locking washer features internal teeth that grip both the fastener and mating surface, preventing loosening from vibration and maintaining secure connections. Replacing a missing, bent, or corroded star washer ensures proper fastener retention and prevents component separation during operation.
| Part Number | 0090512 |
|---|---|
| Part Description | Star Washer |
| Brand | SprayTech |
| Fits | Airless EP2205, EP2105, ED1150 |
| Condition | New |
The SprayTech 0090512 Star Washer is a tooth-lock washer designed to prevent fasteners from loosening due to vibration in SprayTech Airless EP2205, EP2105, and ED1150 sprayers. The internal teeth dig into both the fastener head and the mating surface, creating a positive locking action that resists rotational loosening.
Star washers are commonly used in high-vibration applications such as pump mounts, motor attachments, and cover plates. A missing or damaged star washer can allow fasteners to back out over time, leading to component misalignment, increased wear, or complete failure. Replacing with a new star washer restores secure fastening and reliable operation.
| Vibration resistance | Prevents fasteners from loosening due to machine vibration |
|---|---|
| Positive locking | Teeth embed into surfaces, creating mechanical lock |
| Load distribution | Helps distribute clamping force evenly under fastener head |
| Missing washer | Washer absent during disassembly; always replace |
|---|---|
| Bent or deformed | Washer no longer flat or teeth are distorted |
| Corroded | Rust or corrosion has weakened the washer |
| Worn teeth | Teeth are flattened or no longer provide gripping action |
SprayTech part 0090512 is compatible with the following SprayTech airless sprayer models. Always confirm fitment using the correct parts diagram for your exact model and revision.
| SprayTech Model | Component |
|---|---|
| Airless EP2205 | Star Washer |
| Airless EP2105 | Star Washer |
| ED1150 | Star Washer |
When replacing a star washer, these components are often inspected or replaced at the same time to ensure complete fastening integrity.
Inspect fastener threads for damage or stretch; replace if worn.
Often used in combination with star washers; replace if corroded or deformed.
For critical applications, consider thread locking compound in addition to the star washer.