The Wacker Neuson is a genuine OEM Hexagon Nut designed for the E1250 and HSH380 series hydronic surface heaters. Sourced directly from Wacker Neuson, this fastener meets the exact dimensional and material specifications of the original hardware installed at the factory. It fits multiple configurations across the E1250S, E1250B, E1250P, HSH380S, and HSH380B product families, covering LP/NG, diesel, and generator-equipped variants. When a fastener is stripped, corroded, or missing, replacing it with the correct OEM specification hardware ensures structural integrity and a secure, lasting connection.
Key Features
- OEM-Grade Material and Dimensional Accuracy — Manufactured to the precise thread pitch, width-across-flats, and material grade of the original fastener, so torque values and clamping load behave exactly as the machine was engineered to require.
- Drop-In Hardware Replacement — Threads directly onto the existing fastener interface with no rework to mating components — ideal for field service and scheduled maintenance alike.
- Broad Fitment Across the E1250 and HSH380 Families — Confirmed for E1250S, E1250B, and E1250P hydronic heaters in LP/NG and diesel configurations, as well as HSH380S and HSH380B units with and without an onboard generator.
- Maintains Secure Connections in Thermal Cycling Environments — Hydronic heaters expand and contract with repeated heat cycles; using an undersized or incorrect fastener in these assemblies can lead to loosening and fluid or heat-circuit leaks over time.
- Genuine Wacker Neuson Part — Supplied as authentic OEM hardware, giving you full confidence that part number 5200015001 is the correct specification for your machine's service record.
A hexagon nut is a standard threaded fastener used to clamp and secure components within an assembly. In hydronic surface heaters like the E1250 and HSH380 series, fasteners hold together critical structural, plumbing, and heat-circuit interfaces that are subject to vibration, thermal expansion, and repeated service access. A worn, rounded, or incorrect nut can compromise joint integrity, leading to loose assemblies, potential fluid pathway leaks, or unreliable operation of the heating system. Replacing a damaged fastener promptly with the correct OEM hardware restores the original clamping specification and keeps the heater operating as intended.
Part Details
| Part Number | 5200015001 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Hexagon Nut |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E1250S | E1250S | 5200012355, 5200012354 |
| E12540B | E1250B | 5200012353, 5200007613 |
| HSH380s | HSH 380S | 5100054643 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
| HSH380S-Diesel, with Generator | HSH380S | 5200012371, 5200012370 |
| HSH380B-Diesel, without generator | HSH380B | 5200012359, 5200007614 |
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.
