The Wacker Neuson is a genuine OEM Washer, Flat, 5/16 designed for a broad range of Wacker Neuson hydronic surface heaters, ground heaters, indirect air heaters, pump packs, and hose handling systems. As a direct genuine OEM component, is manufactured to the same standards as the original hardware installed at the factory, ensuring correct load distribution and sealing performance across every application it serves. This flat washer fits key series including the E3000, E2200, E1100, E5000, HSH350, HSH650, HSH700, HI1000, HI1000DGM, HI900DGM, HI260, and Pureheat hydronic heater lines, as well as the DPP33, DPP8.8, SPP4.4 pump packs, HX50, HX100 heat exchangers, BP45 booster pump, and HHS-series hose handling systems. When a flat washer wears, deforms, or goes missing, fastener clamping force is compromised — leading to loose connections, potential fluid or air leaks, and accelerated wear on mating surfaces.
Key Features
- Genuine OEM Material Integrity — Manufactured to Wacker Neuson's original hardness and thickness specifications, so the washer distributes fastener load correctly without deforming under the clamping torque used in heater and pump assemblies.
- Drop-In Hardware Replacement — The 5/16 sizing matches the original bolt and hole pattern exactly, so installation requires no filing, shimming, or modification to surrounding hardware.
- Broad Cross-Series Compatibility — A single part number covers E-series ground and hydronic surface heaters, HSH and Pureheat hydronic heaters, HI-series indirect air heaters, pump packs, heat exchangers, and hose handling systems — simplifying parts inventory for fleets running multiple Wacker Neuson climate products.
- Protects Mating Surfaces — Correct washer thickness and hardness prevent fastener heads from pulling through or scoring the mounting flanges and panels they bear against, preserving the structural integrity of heater and pump housings.
- Supports Leak-Free Connections — In fluid and air circuit assemblies, a properly seated flat washer maintains even clamping across gaskets and fittings; a missing or deformed washer is a common source of slow leaks that can go undetected until performance drops.
A flat washer is a thin, disc-shaped fastener component placed between a bolt head or nut and the surface being clamped. Its job is to spread the clamping load over a wider area, preventing the fastener from pulling into or damaging the material underneath and ensuring even pressure across joints, panels, and fittings. In equipment like hydronic heaters, ground heaters, and pump assemblies — where vibration, thermal cycling, and fluid pressure are constant — a correctly sized and properly hardened washer is essential to keeping bolted connections tight and leak-free over time. When a washer is missing, oversized, or has deformed from overtorquing, the fastener loses its clamping effectiveness, joints can work loose, and surrounding components are exposed to wear and stress they were not designed to absorb.
Part Details
| Part Number | 5000167731 |
|---|---|
| Old Part Number | 0167731 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Washer, Flat, 5/16 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E3000 Hydronic Surface Heater with generator | E3000 | 5000620219, 5000620679, 5000620158, 5000620678, 5200014677, 5200004952, 5100017807, 5100017809, 5200014678, 5200014679, 5200014720, 5100017806, 5100017808, 5200014721, 5100017810, 5100017811, 5100025046, 5100055568, 5100056441, 5100017801, 5100056440, 5100025045 |
| HSH700 | HSH700G | 5000620243 |
| E2200 GROUND HEATER, W/ LIFT BAIL | E2200 | 5000620215, 5000620176, 5000620216, 5000620226, 5100017448, 5100017449 |
| E5000 GROUND HEATER, W/GAS BURNER | E5000 | 5000620898, 5000620897, 5000620899 |
| Hydronic Surface Heater | HSH350 | 5000620254, 5200001677 |
| HP252 | HP252 | 5000620249 |
| DPP33 Dual Pump Pack | DPP33 | 5000620429 |
| SPP4.4 Single Pump Pack | SPP4.4 | 5000620427 |
| DPP8.8 Dual Pump Pack | DPP8.8 | 5000620428 |
| HI260 HEATER,OIL WITH TANK | HI260 | 5200018503 |
| HX50 Heat Exchanger | HX50 | 5000620431 |
| BP45 Pureheat Booster Pump, 1.5hp | BP45 | 5000620433 |
| Pureheat Hydronic Heater, Oil Burner | Pureheat | 5000620245, 5000620246, 5000620190, 5000620220 |
| E1100 GROUND HEATER | E1100 | 5000620172, 5000620244, 5200001676 |
| E3000 ES Hydronic Surface Heater | E3000ES | 5000620968, 5000620967 |
| Hydronic Surface Heater w/ Gen erator, 3000 ft hose | S3000 | 5000620218, 5000620182 |
| HSH650 | HSH650 | 5000620991 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357 |
| Indirect Mobile Air Heater, Na tural Gas | Arctic Bear HD | 5000620199 |
| HI1000 Indirect Air Heater, Diesel w/Tank | HI1000 | 5200011232, 5200011233, 5100049274 |
| HI1000 Indirect Air Heater, DGM, Electric Break | HI1000DGM | 5200011234, 5200011235, 5100049275, 5100049276 |
| Hydronic Surface Heater, 700m hose | E700M | 5000620195 |
| Mobile Indirect Fired Air Heat er, Diesel w/Genset | CUB700GM | 5000620759 |
| Hose Handling System | HHS3000 | 5000620419 |
| HHS3002 Hose Handling System | HHS3002 | 5000620424 |
| HHS3004 Hose Handling System | HHS3004 | 5000620425 |
| HX100 Heat Exchanger | HX100 | 5000620432 |
| HHS2502 Hose Handling System | HHS2502 | 5200003554 |
| HI900 Heater-DGM,Srg,-40 | HI900DGM | 5200014221, 5200014222 |
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.
