

Part number 856-963 is a Tinnerman nut sized 10-24 used for fastening components in compatible sprayer systems. This self-locking nut provides secure attachment without the need for additional locking devices. It is compatible with 0528925N_2000_4000; Hydr M nad Hydra Pro Super; and Hydra M and Hydra Pro 2000_4000 models. Replacing a missing or damaged Tinnerman nut restores proper fastening and prevents loosening of components.
| Part Number | 856-963 |
|---|---|
| Part Description | Nut, Tinnerman, 10-24 |
| Fits | 0528925N_2000_4000; Hydr M nad Hydra Pro Super; Hydra M and Hydra Pro 2000_4000 |
| Condition | New |
The 856-963 Tinnerman nut is a specialized self-locking fastener designed for quick and secure assembly in compatible sprayer systems. It is specifically sized for 10-24 threads and is compatible with 0528925N_2000_4000; Hydr M nad Hydra Pro Super; and Hydra M and Hydra Pro 2000_4000 models. Tinnerman nuts, also known as speed nuts, are typically made from spring steel and feature a arched or curved design that creates a locking action when tightened. They are designed to be pushed onto a screw or bolt and then tightened, with the spring tension providing resistance to loosening from vibration. These nuts are often used in applications where speed of assembly and vibration resistance are important, such as attaching covers, panels, or light-duty components. They are easy to install and provide a reliable fastening solution without the need for additional lock washers. Over time, Tinnerman nuts can lose their spring tension, become corroded, or be damaged during removal. A worn or missing nut may fail to hold securely, leading to loose panels or rattling. Symptoms of a faulty Tinnerman nut include difficulty tightening, the nut spinning without locking, or visible corrosion or damage. Replacing a worn or missing Tinnerman nut with this genuine part restores secure, vibration-resistant fastening. This ensures that components remain properly attached during operation. When installing, ensure the nut is properly seated and that the threads are clean.
| Self-locking fastening | Spring tension resists loosening |
|---|---|
| Quick assembly | Easy to install without tools |
| Vibration resistance | Prevents loosening during operation |
| Loss of tension | Nut no longer provides locking force |
|---|---|
| Corrosion or damage | Rust or cracks weaken the nut |
| Missing nut | Nut lost during service |
| Spins without tightening | Nut will not engage threads properly |
Part number 856-963 is compatible with the following models. Always verify using your equipment's serial number and parts manual.
| Series | Specific Models |
|---|---|
| Manual Reference | 0528925N_2000_4000 |
| Hydra Series | Hydr M and Hydra Pro Super |
| Hydra Series | Hydra M and Hydra Pro 2000_4000 |
When replacing the Tinnerman nut, inspecting these associated components can help ensure a complete repair.
Check for thread damage.
Inspect attachment point for damage.
Check for deformation.