Wacker Neuson 5000171056 Lock Nut 1/2-20 Hex Center

The Wacker Neuson is a genuine OEM Lock Nut 1/2-20 Hex Center designed for the CRT36 and CRT48 series ride-on concrete trowels. Sourced directly from Wacker Neuson, this fastener matches the original specification used on these machines at the time of manufacture. It is confirmed for use across a wide range of CRT36 and CRT48 model configurations, including dual-fuel and wheel kit variants. When a lock nut wears, loosens, or fails, it can allow critical fastened components to shift during operation — making prompt replacement with the correct part essential.

Key Features

• Genuine OEM Thread Integrity — Manufactured to the exact 1/2-20 thread pitch and hex center dimension specified for Wacker Neuson CRT ride-on trowels, ensuring full thread engagement without reworking mating hardware.
• Direct-Install Fastener — A bolt-in replacement that seats and torques exactly like the original, with no chasing or re-tapping of the mating thread required.
• Broad CRT Series Coverage — Fits CRT36-24A, CRT36-25, CRT36-26A, CRT48-31V, CRT48-33K, CRT48-34V, CRT48-35L, CRT48-35V, CRT48-37V, CRT48-57K, and related variants including dual-fuel and wheel kit configurations.
• Locking Retention Under Vibration — The hex center lock design resists loosening under the continuous vibration and cyclical loading generated during concrete finishing, keeping fastened assemblies secure through long finishing passes.
• Genuine Part Assurance — Supplied as an authentic Wacker Neuson component under part number 5000171056, backed by the manufacturer's OEM parts program.

A lock nut is a fastener engineered to resist loosening under vibration and dynamic loads. Unlike a standard hex nut, the locking feature — whether a nylon insert, prevailing-torque profile, or center-lock geometry — creates friction or mechanical resistance that holds the nut at its set torque position during machine operation. On a ride-on concrete trowel, rotating assemblies and engine-driven components generate constant vibration; a lock nut that has lost its locking force or is the wrong thread specification can back off gradually, leading to loose components, misalignment, and potential mechanical damage. Replacing a worn or damaged lock nut with the correct OEM part restores the clamping integrity the assembly was designed to maintain.

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.

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