The Wacker Neuson is a genuine OEM Hex Nut 5/8-11 Grade 8 designed for the E3000, E2200, E5000, E3000 ES, S3000, Pureheat, CH5000, MC5200, and HI1000DGM series hydronic surface heaters, ground heaters, and indirect air heaters. As a direct factory part, delivers the exact thread specification and tensile rating required to keep critical fastened joints secure across these heavy-duty heating systems. Genuine OEM sourcing means this nut is manufactured to the same standard as the hardware originally installed at the factory, so you get a drop-in replacement with no guesswork on grade or thread pitch. Confirm your model number before ordering to ensure compatibility with your specific machine configuration.
Key Features
- Grade 8 Tensile Strength — The high-strength Grade 8 rating provides the clamping force needed to withstand the vibration and thermal cycling common in hydronic heating and indirect air heating equipment.
- Correct 5/8-11 Thread Form — The 5/8-11 UNC thread profile threads directly onto existing fastener hardware without re-tapping or modification, maintaining joint integrity from the first torque.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, part number 5000167766 meets the same material and dimensional tolerances used in original assembly.
- Broad Heater Family Coverage — Fits a wide range of E3000, E2200, E5000, S3000, Pureheat, CH5000, MC5200, and HI1000DGM configurations, including ground heater, hydronic surface heater, and indirect air heater variants.
- Maintains Fastener Joint Integrity — A worn, stripped, or incorrect-grade nut can lead to loosened assemblies and compromised structural connections; replacing with the correct Grade 8 OEM hardware restores the clamping load the joint was engineered to carry.
- Safety-Critical Fastener — In heating equipment subject to pressure, high temperatures, and transport vibration, using a correctly graded and sized fastener is essential to safe structural and mechanical connections.
A hex nut is a standard threaded fastener used to clamp two or more components together by threading onto a bolt or stud and drawing the mating surfaces tight. In hydronic heaters and indirect air heaters, hex nuts secure structural frames, hose fittings, panel assemblies, and burner components that must remain firmly joined through operating heat cycles, transport, and outdoor exposure. When a nut becomes stripped, corroded, or loses clamping load, the joint it holds can shift or loosen, potentially causing fluid leaks, component misalignment, or structural instability in the assembly. Using the correct grade and thread specification — in this case 5/8-11 Grade 8 — ensures the fastener can be torqued to the value the original design requires.
Part Details
| Part Number | 5000167766 |
|---|---|
| Old Part Number | 0167766 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Hex Nut 5/8-11 Grade 8 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E3000 Hydronic Surface Heater with generator | E3000 | 5000620219, 5000620158, 5000620678, 5000620679, 5200014677, 5200004952, 5100017807, 5200014678, 5100017806, 5200014721, 5100017810, 5100017811, 5100025046, 5100055568, 5100056441, 5100017801, 5100056440, 5200014679, 5200014720, 5100017808, 5100017809 |
| E2200 GROUND HEATER, W/ LIFT BAIL | E2200 | 5000620215, 5000620176, 5000620216, 5000620226, 5100017448, 5100017449 |
| E5000 GROUND HEATER, W/GAS BURNER | E5000 | 5000620898, 5000620897, 5000620899 |
| Pureheat Hydronic Heater, Oil Burner | Pureheat | 5000620245, 5000620246, 5000620190, 5000620220 |
| HI770XHD Indirect Heater | Arctic Bear XHD NS | 5000620690 |
| E3000 ES Hydronic Surface Heater | E3000ES | 5000620968, 5000620967 |
| Hydronic Surface Heater w/ Gen erator, 3000 ft hose | S3000 | 5000620218, 5000620182 |
| Mobile Drying System | MC5200 | 5000620201, 5000620232 |
| Indirect Mobile Air Heater, Na tural Gas | Arctic Bear HD | 5000620199, 5000620197 |
| HI1000 Indirect Air Heater, DGM, Electric Break | HI1000DGM | 5200011234, 5200011235, 5100049275, 5100049276 |
| Cross Heater with oil burner | CH5000 | 5000620240, 5000620242 |
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.
