Airless Sprayer HVLP ProFinish / Hydra X / PowrBeast / PowrLiner part 770-144 is a hexagonal locknut designed to secure components and prevent loosening from vibration on compatible sprayer models. This precision fastener features a locking mechanism that maintains clamping force even under constant vibration. Replacing a worn, stripped, or missing locknut ensures components remain securely fastened during operation.
| Part Number | 770-144 |
|---|---|
| Part Description | Hexagonal Locknut |
| Brand | Airless Sprayer HVLP ProFinish / Hydra X / PowrBeast / PowrLiner |
| Fits | Airless Sprayer HVLP ProFinish TS, TSR and TSP series; Hydra X 4540-7230; PowrBeast 4700, 7700, 9700; PowrLiner 2850, 4955, 6955, 8955, 550, 1800M, 2800M, 4900, 6900 XLT SP, 6900 XLT, 800, 4950, 8900 XLT SP, 8900 XLT, 6950, 8900 |
| Condition | New |
The 770-144 Hexagonal Locknut is a precision fastener designed to secure components on compatible sprayer models from Airless Sprayer HVLP ProFinish, Hydra X, PowrBeast, and PowrLiner. Its integrated locking feature prevents loosening caused by vibration during operation, maintaining clamping force over time.
Locknuts are critical fasteners in applications where vibration is present, such as on engine mounts, pump assemblies, wheel attachments, and panel fasteners. Unlike standard nuts, locknuts 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, locknuts can become worn at the threads, lose their locking effectiveness, or become corroded. A worn or damaged locknut may allow components to loosen, leading to misalignment, increased wear, or potential safety hazards. Replacing with a new hexagonal locknut 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 |
Part 770-144 is compatible with the following sprayer models. Always verify fitment using your equipment's parts diagram before ordering.
| Model | Component |
|---|---|
| Airless Sprayer HVLP ProFinish TS Series | Hexagonal Locknut |
| Airless Sprayer HVLP ProFinish TSR Series | Hexagonal Locknut |
| Airless Sprayer HVLP ProFinish TSP Series | Hexagonal Locknut |
| Hydra X 4540-7230 | Hexagonal Locknut |
| PowrBeast 4700 | Hexagonal Locknut |
| PowrBeast 7700 | Hexagonal Locknut |
| PowrBeast 9700 | Hexagonal Locknut |
| PowrLiner 2850 | Hexagonal Locknut |
| PowrLiner 4955 | Hexagonal Locknut |
| PowrLiner 6955 | Hexagonal Locknut |
| PowrLiner 8955 | Hexagonal Locknut |
| PowrLiner 550 | Hexagonal Locknut |
| PowrLiner 1800M | Hexagonal Locknut |
| PowrLiner 2800M | Hexagonal Locknut |
| PowrLiner 4900 | Hexagonal Locknut |
| PowrLiner 6900 XLT SP | Hexagonal Locknut |
| PowrLiner 6900 XLT | Hexagonal Locknut |
| PowrLiner 800 | Hexagonal Locknut |
| PowrLiner 4950 | Hexagonal Locknut |
| PowrLiner 8900 XLT SP | Hexagonal Locknut |
| PowrLiner 8900 XLT | Hexagonal Locknut |
| PowrLiner 6950 | Hexagonal Locknut |
| PowrLiner 8900 | Hexagonal Locknut |
When replacing locknuts, 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.
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