The Wacker Neuson Lock Nut is a genuine OEM fastener designed for the HSH700 and HSH650 hydronic surface heaters. As a direct OEM replacement, this lock nut is sourced from Wacker Neuson and meets the exact specifications required for proper assembly and secure operation on these machines. Verified fitment covers the HSH700 and HSH650 series, so you can order with confidence knowing this is the correct part for your equipment.
Key Features
- Genuine OEM Specification: — Manufactured to the exact thread form, hardness, and prevailing-torque resistance required for secure fastening in hydronic surface heater assemblies.
- Drop-In Replacement: — Matches the original hardware profile exactly, threading directly into existing positions without additional fitting or modification.
- Confirmed HSH Series Fitment: — Verified for the Wacker Neuson HSH700 and HSH650 hydronic surface heaters.
- Secure Locking Action: — The locking feature resists vibration-induced loosening, keeping critical components firmly in place during heater operation across extended service cycles.
- Safety-Critical Fastener: — Proper torque retention in a hydronic heating system is essential to maintaining sealed, pressurized connections; using the correct OEM lock nut helps prevent leaks and unintended component separation.
A lock nut is a fastener engineered with a built-in resistance mechanism — such as a nylon insert or deformed thread profile — that prevents it from loosening under vibration, thermal cycling, or operational stress. In hydronic surface heaters like the HSH700 and HSH650, lock nuts secure components within pressurized fluid circuits and structural assemblies where a standard nut could back off over time. When a lock nut fails or is replaced with an incorrect substitute, connections can loosen, leading to fluid leaks, loss of heating efficiency, or component failure.
Part Details
| Part Number | 5000176555 |
|---|---|
| Old Part Number | 0176555 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lock Nut |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HSH700 | HSH700G | 5000620243 |
| HSH650 | HSH650 | 5000620991 |
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.
