Wacker Neuson 5100038780 Bonded SS Washer #14 Screw 7/8" OD

The Wacker Neuson Bonded SS Washer #14 Screw 7/8" OD is a genuine OEM component designed for the HI260, HI1000, HI1000DGM, and HI770XHD indirect air heater series. Sourced directly from Wacker Neuson, this part carries the same specification and material grade as the original hardware installed at the factory. Compatible across multiple heater configurations — including diesel, gas, DGM electric break, and surge brake variants — covers a wide range of HI-series units in a single part number. When you need an exact hardware match for reassembly, this is the correct washer for the job.

Key Features

• Stainless Steel Bonded Construction — The integrated bonded seal on this washer creates a secure, leak-resistant fastening point, critical in heater enclosures exposed to heat cycling and condensation.
• Correct Thread and OD Sizing — Sized specifically for a #14 screw with a 7/8" outer diameter, this washer drops into place without modification during reassembly.
• Genuine Wacker Neuson OEM Part — Manufactured to the same standard as the original hardware, ensuring consistent clamping load and seal integrity across the service life of the fastener.
• Broad HI-Series Heater Coverage — A single part number fits the HI260, HI1000, HI1000DGM, and HI770XHD Extra Heavy Duty Air Heater, spanning diesel, gas, and electric brake configurations.
• Maintains Sealed Enclosure Integrity — A worn or missing bonded washer can allow moisture ingress and panel vibration at fastener points; replacing it restores a properly sealed, rattle-free assembly.

A bonded washer combines a metal backing ring with a captive rubber seal, allowing it to perform two jobs at once: it distributes the clamping load of the screw across a wider surface area and compresses the rubber element to seal the fastener hole against moisture, dust, and air infiltration. In indirect air heaters like the HI-series units, panels and access covers are frequently removed for servicing, making hardware condition easy to overlook. A compromised or missing bonded washer at any fastener point can allow water to track into the enclosure or permit panel flex that stresses adjacent components. Replacing worn hardware with the correct OEM washer restores the seal and keeps the enclosure performing as designed.

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.