Wacker Neuson 5100038727 Bolt M8x25 Hex Head Flanged Zinc 10.9

The Wacker Neuson Bolt M8x25 Hex Head Flanged Zinc 10.9 is a genuine OEM fastener designed for the HI260, HI1000, HI1000DGM, and HIF690 series indirect air heaters. As a direct-from-manufacturer component, carries the correct grade 10.9 tensile rating, zinc finish, and integrated flange geometry specified for these heater assemblies. It fits across a wide range of HI-series configurations — including oil, diesel, gas, and DGM electric and surge brake variants — making it a go-to fastener for technicians servicing multiple units. Order with confidence knowing this is the exact part called out in Wacker Neuson's parts documentation.

Key Features

• Grade 10.9 Tensile Strength — High-strength property class ensures the bolt maintains clamp load under the thermal cycling and vibration stresses common in portable heater applications.
• Integrated Flange Head — The flanged hex head distributes bearing load across a wider surface area, reducing the need for a separate washer and ensuring consistent seating against heater housing panels.
• Zinc Coating for Corrosion Resistance — Zinc plating protects against oxidation in the outdoor and jobsite environments where HI-series heaters are routinely deployed.
• Broad HI-Series Compatibility — Fits HI260, HI1000, HI1000DGM, and HIF690 heater models across oil, diesel, gas, and DGM configurations — one part number across multiple units in your fleet.
• Genuine OEM Specification — Sourced directly from Wacker Neuson, part 5100038727 matches the exact M8x25 dimensions, thread pitch, and property class listed in the original equipment documentation.

A flanged hex head bolt at this grade and size serves as a primary structural fastener in portable indirect air heater assemblies, securing panels, brackets, or heat exchanger components that must remain firmly clamped through repeated heating and cooling cycles. The grade 10.9 classification means the bolt is manufactured to a high tensile and proof load standard, which is critical in applications where vibration or thermal expansion could loosen an under-rated fastener over time. Using the correct replacement fastener — with the right thread size, length, grade, and flange geometry — ensures the assembly torques to specification and maintains structural integrity throughout the heater's service life.

Part Details

Compatibility & Fitment

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.