Wacker Neuson 5000166459 Lock Nut for 1/2 EMT Conduit

The Wacker Neuson is a genuine OEM Lock Nut for 1/2 EMT Conduit designed for a wide range of Wacker Neuson heating, lighting, and hydronic surface heating equipment, including the E3000 Ground Heater, HI770XHD Indirect Air Heater, LTW and LTN series light towers, HSH hydronic surface heaters, and numerous related accessories and pump pack systems. As a factory-sourced component, is manufactured to the exact specification used on the original assembly, ensuring a correct, secure fit wherever 1/2 EMT conduit connections are used on compatible machines. This nut is an essential fastening element across a broad cross-section of the Wacker Neuson climate control and power equipment lineup, making it a smart stocking item for fleet operators and service technicians alike. Confirm your model number against the fitment list before ordering to ensure this is the correct part for your application.

Key Features

• Genuine OEM Specification: — Sourced directly from Wacker Neuson, this lock nut meets the exact thread pitch, material grade, and dimensional tolerances specified for 1/2 EMT conduit connections on the original equipment build.
• Secure Conduit Retention: — Engineered to grip and lock 1/2 EMT conduit fittings firmly in place, preventing loosening from vibration or thermal cycling common in heating and power generation environments.
• Broad Cross-Equipment Fitment: — Compatible with E3000, E2200, E1100, E1250, and E5000 ground and hydronic surface heaters; HI series indirect air heaters; LTW and LTN light tower families; HSH hydronic heaters; and associated pump and hose handling systems.
• Electrical Safety at the Connection Point: — A properly secured conduit lock nut maintains conduit continuity and protects wiring from movement and chafing — critical on fuel-fired heating equipment and generator-equipped machines where electrical integrity is a safety requirement.
• Direct OEM Replacement: — Part number 5000166459 cross-references directly to the original assembly, so service technicians can install with confidence using standard hand tools and existing conduit hardware.

A lock nut for EMT conduit is a threaded fastener used to clamp electrical metallic tubing fittings securely to enclosures, panels, or junction boxes, preventing the conduit from backing out and maintaining the integrity of the wiring pathway. On equipment like indirect air heaters, hydronic surface heaters, and light towers, conduit runs protect control wiring and power circuits from heat, moisture, and mechanical stress — making a secure lock nut essential to both safe operation and long-term electrical reliability. If this nut is missing, loose, or damaged, conduit fittings can shift under vibration, exposing wiring to abrasion, moisture ingress, or intermittent electrical faults that are difficult to diagnose in the field.

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.