

SprayTech part 9811119 is a locking nut designed to secure components and prevent loosening from vibration on the SprayTech HVLP Maxum II sprayer. This precision fastener features an integrated locking mechanism that maintains clamping force even under constant vibration. Replacing a worn, stripped, or missing locking nut ensures components remain securely fastened during operation.
| Part Number | 9811119 |
|---|---|
| Part Description | Locking Nut |
| Brand | SprayTech |
| Fits | SprayTech HVLP Maxum II |
| Condition | New |
The 9811119 Locking Nut is a precision fastener designed to secure components on the SprayTech HVLP Maxum II sprayer. Its integrated locking feature prevents loosening caused by vibration during operation, maintaining clamping force over time.
Locking nuts are critical fasteners in applications where vibration is present, such as on motor mounts, pump assemblies, and panel fasteners. Unlike standard nuts, locking nuts incorporate a locking mechanism—which may be a nylon insert, deformed threads, or other feature—that resists backing off under vibration. This ensures that critical components remain securely fastened even after extended operation.
Over time, locking nuts can become worn at the threads, lose their locking effectiveness, or become corroded. A worn or damaged locking nut may allow components to loosen, leading to misalignment, increased wear, or potential safety hazards. Replacing with a new locking nut restores secure fastening and ensures reliable operation.
| Component securing | Holds components in place on threads |
|---|---|
| Vibration resistance | Locking mechanism prevents loosening from vibration |
| Clamping force | Maintains proper tension on fastened components |
| Worn threads | Threads are damaged and cannot maintain proper torque |
|---|---|
| Lost locking ability | Nut spins freely without resistance |
| Corrosion | Rust or chemical damage compromising nut integrity |
| Missing nut | Nut lost, component no longer secured |
SprayTech part 9811119 is compatible with the following sprayer model. Always verify fitment using your equipment's parts diagram before ordering.
| Model | Component |
|---|---|
| SprayTech HVLP Maxum II | Locking Nut |
When replacing locking nuts, these associated components are often inspected or replaced at the same time.
Inspect threads on the bolt or stud for damage or wear.
Check flat or lock washers used with the nut; replace if worn.
Inspect the component being fastened for damage or wear.