Hydra part 870-441 is a nut spacer used on Hydra M 2000, Hydra M 4000, and Hydra Pro Super sprayers. This component serves as both a nut and a spacer, providing correct positioning and secure fastening for pump components, fluid sections, or other assemblies. Replacing a worn, stripped, or missing nut spacer ensures proper alignment, prevents loosening, and maintains the structural integrity of critical connections.
| Part Number | 870-441 |
|---|---|
| Part Description | Nut Spacer |
| Brand | Hydra |
| Fits | Hydra M 2000, Hydra M 4000, Hydra Pro Super |
| Condition | New |
The Hydra 870-441 Nut Spacer is a genuine OEM replacement component that combines a nut and spacer in one piece. It is used in critical areas of the Hydra M 2000, Hydra M 4000, and Hydra Pro Super sprayers to provide accurate spacing while also serving as a threaded fastener. This dual‑function design ensures proper alignment of pump components, fluid sections, or mounting brackets, and maintains secure clamping under vibration and pressure.
Over time, nut spacers can become stripped, corroded, or lost during maintenance. A damaged or missing nut spacer can lead to misalignment, loosening of fasteners, fluid leaks, or premature wear of adjacent components. Replacing it with this genuine Hydra part restores correct geometry, prevents thread failure, and ensures the sprayer operates reliably.
| Provides spacing | Positions components at the correct distance for proper operation |
|---|---|
| Secures fasteners | Acts as a threaded nut to clamp components together |
| Maintains alignment | Prevents shifting of critical parts such as pump manifolds or motor mounts |
| Stripped threads | Fastener will not tighten properly, causing loose connections |
|---|---|
| Corroded / damaged | Visible rust or deformation compromises strength and fit |
| Missing nut spacer | Component absent, leading to misalignment or lack of clamping force |
| During major service | Replace when rebuilding pump, fluid section, or mounting assemblies |
Part 870-441 is compatible with the following Hydra sprayers. Always verify fitment using the correct parts diagram for your exact model and serial number.
| Model | Component Application |
|---|---|
| Hydra M 2000 | Nut spacer (various mounting locations) |
| Hydra M 4000 | Nut spacer (various mounting locations) |
| Hydra Pro Super | Nut spacer (various mounting locations) |
When replacing a nut spacer, it is common to inspect or replace associated hardware and components.
If the nut spacer is stripped, the mating bolt may also be damaged; replace together.
Inspect any washers used with the nut spacer for wear or deformation.
Check the pump, manifold, or bracket for cracks or misalignment.
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