The Wacker Neuson Flange Nut is a genuine OEM component designed for the HSH700 and HSH650 hydronic surface heaters. Sourced directly from Wacker Neuson, this flange nut meets the exact specifications of the original hardware used at the factory. It is a verified fit for both the HSH700 and HSH650 series, so you can replace with confidence knowing the part number matches your machine. Keep your hydronic heater properly assembled and structurally sound with the correct OEM hardware.
Key Features
- OEM-Grade Fastener Integrity — Manufactured to the same torque retention and bearing-surface specifications as the original, ensuring secure clamping force without fastener deformation.
- Integrated Flange Design — The built-in flanged washer distributes load evenly across the mating surface, eliminating the need for a separate washer and simplifying reassembly.
- Direct HSH Series Fitment — Confirmed fit for the HSH700 and HSH650 hydronic surface heaters; cross-reference part number 5000176531 against your machine's parts diagram before ordering.
- Structural Reliability Under Heat-Cycle Stress — Hydronic heater components endure repeated thermal expansion and contraction; correct fastener spec maintains clamp load through those cycles, keeping connections tight and leak-free.
- Genuine Wacker Neuson Part — Backed by Wacker Neuson's OEM supply chain, this is the same flange nut specified in the original service documentation for the HSH700 and HSH650.
A flange nut combines a standard nut with an integrated wide-diameter collar that acts as a built-in washer. This collar spreads the clamping load over a larger surface area, which helps prevent the nut from pulling through or distorting softer mounting surfaces and maintains consistent fastener tension during assembly. On hydronic surface heaters like the HSH700 and HSH650 — which operate through repeated heating and cooling cycles — using the correct flange nut is essential; an incorrectly sized or worn fastener can back off under thermal movement, leading to loose connections, component misalignment, or fluid pathway leaks that compromise heater performance.
Part Details
| Part Number | 5000176531 |
|---|---|
| Old Part Number | 0176531 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flange 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.
