Wacker Neuson 5100066194 Counter Nut M16x1.5

The Wacker Neuson Counter Nut M16x1.5 is a genuine OEM fastener designed for the FUH35/2/42, FUH70/4/42, FUH70/4/42s, FUH70/6/42s, and FUH70/4/42p CH series units. Sourced directly from Wacker Neuson, this part meets the exact thread specification — M16x1.5 fine thread — required for correct installation and secure retention. Confirmed fitment across the FUH heater series means you can order with confidence knowing this is the right nut for your machine.

Key Features

• Exact Thread Specification — M16x1.5 fine thread profile ensures full engagement and correct torque retention without risk of cross-threading or loosening under vibration.
• Genuine OEM Part — Manufactured to Wacker Neuson's original specification, delivering the dimensional accuracy and material grade expected from a locking fastener in this application.
• Direct Drop-In Replacement — Installs in place of the original counter nut with no modification to mating hardware or surrounding components.
• Broad FUH Series Compatibility — Verified fit across FUH35/2/42, FUH70/4/42, FUH70/4/42s, FUH70/6/42s, and FUH70/4/42p CH models, covering a wide range of Wacker Neuson forced-air heater configurations.
• Structural Integrity Under Load — A correctly seated counter nut maintains clamping force on critical assemblies; a worn or incorrect nut can allow fastened components to shift or work loose during operation.
• Verified Wacker Neuson Part Number — Order by part number 5100066194 to confirm you are receiving the correct OEM component for your FUH series unit.

A counter nut — also known as a jam nut or lock nut — is threaded onto a bolt or stud after a primary nut to lock both in position and resist loosening caused by vibration or repeated load cycling. In forced-air heater assemblies like the Wacker Neuson FUH series, these fasteners secure components that are subject to continuous thermal expansion and mechanical stress during operation. When a counter nut becomes worn, stripped, or lost, the assembly it secures can shift or loosen over time, potentially affecting the alignment or integrity of attached components.

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.