Wacker Neuson 5000176419 Lock Nut 3/4 NPT Steel

The Wacker Neuson is a genuine OEM Lock Nut 3/4 NPT Steel designed for a wide range of Wacker Neuson indirect air heaters and light towers, including the HI260, HI770XHD, LTN6, LTW, and LTV series machines. As a genuine OEM part, the is sourced directly through Wacker Neuson's authorized supply chain, ensuring it meets the exact material and dimensional specifications of the original component. This steel lock nut is a direct-fit replacement that installs exactly as the factory-installed part, making it a straightforward swap during routine maintenance or repair. Confirmed fitment spans an extensive range of configurations across both the indirect air heater and light tower product families.

Key Features

• Steel Construction for Threaded Joint Integrity — Made from steel to resist deformation under torque and vibration, maintaining a secure, leak-free 3/4 NPT threaded connection in demanding field conditions.
• Genuine OEM Part — Supplied as an authorized Wacker Neuson OEM component, manufactured to the exact thread pitch, wall thickness, and material grade of the original lock nut.
• 3/4 NPT Thread Specification — Sized to the National Pipe Thread Taper standard, ensuring compatibility with the 3/4 NPT fittings and ports found on the HI260, HI770XHD, LTN6, LTW, and LTV series machines.
• Broad Cross-Series Fitment — A single part number covering indirect air heaters and an extensive range of light tower configurations, from compact LTN6 units to large-format LTW20Z series towers.
• Fuel and Fluid System Reliability — A failed or loose lock nut can allow fluid or fuel line connections to back off under vibration, risking leaks; replacing with the correct OEM part restores a fully secured connection.
• Fuel System Safety — On diesel-fueled heaters and generator-powered light towers, a properly torqued and correctly sized lock nut is essential to maintaining sealed connections and preventing fuel or fluid seepage at pipe joints.

A lock nut threaded to a pipe fitting or port serves as the final securing element that prevents the fitting from loosening due to vibration, thermal cycling, or pressure fluctuation. On indirect air heaters like the HI260 and HI770XHD, these connections are part of the fuel delivery or fluid circuit, where any movement at a joint can compromise sealing integrity. On light towers, similar fittings appear in fuel and hydraulic circuits; a loose or missing lock nut at a 3/4 NPT connection can allow components to shift or leak over time, leading to fluid loss or unplanned shutdowns.

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.