The Wacker Neuson Lock Washer is a genuine OEM component designed for the HSH350 hydronic surface heater series. As a direct factory replacement, this lock washer delivers the exact dimensions and material specification required to maintain secure fastener tension in the HSH350 assembly. Genuine OEM sourcing means this part matches the original hardware installed at the factory, so there is no guesswork on fitment when servicing your HSH350 unit.
Key Features
- Genuine OEM Material Grade — Manufactured to the same hardness and spring-tension spec as the original, ensuring consistent clamping force under the thermal cycling demands of hydronic heating equipment.
- Drop-In Replacement — Matches the original hole diameter, outer diameter, and tooth profile of the factory hardware, seating correctly without modification to existing fastener positions.
- Confirmed HSH350 Fitment — Verified for HSH350 hydronic surface heaters, covering both 60 Hz and 50 Hz diesel configurations.
- Prevents Fastener Loosening — A worn or missing lock washer allows fasteners to back out under vibration and thermal expansion, which can lead to fluid leaks or component misalignment in a pressurized heating circuit.
- Fuel and Fluid System Integrity — In hydronic heating systems, properly torqued and secured fasteners are critical to maintaining leak-free connections; using the correct OEM lock washer supports safe, compliant operation.
A lock washer is a small but critical fastener component that sits beneath a bolt or nut to resist loosening caused by vibration, thermal expansion, and contraction. In hydronic surface heaters like the HSH350, where pressurized fluid circuits and diesel burner components are subject to repeated heat cycles, maintaining consistent fastener clamp load is essential to preventing leaks and keeping connections tight. A worn, deformed, or missing lock washer compromises that clamp load and can allow bolts to gradually back out, leading to fluid seepage, component movement, or system failure during operation.
Part Details
| Part Number | 5000177094 |
|---|---|
| Old Part Number | 0177094 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lock Washer |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydronic Surface Heater | HSH350 | 5000620254, 5200001677 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
