Wacker Neuson 5000116148 Hex Serrated Flange Nut 1/2-13

The Wacker Neuson is a genuine OEM Hex Serrated Flange Nut 1/2-13 designed for the WB16A Power Buggy series and the G155 Mobile Generator Skid Mounted. Sourced directly from Wacker Neuson, this fastener matches the original part specification for a drop-in replacement with no guesswork on sizing or thread pitch. It fits the full WB16A family — including WB16AF, WB16AS, WB16AD, WB16AE, WB16ADF, WB16ADE, WB16ADS, WB16AEF, WB16AES, WB16AFS, WB16ADEF, WB16ADES, WB16ADFS, WB16AEFS, and WB16ADEFS variants — making it a practical stock item for fleets running multiple WB16A configurations. As a genuine OEM part, meets the same material and dimensional standards as the fastener installed at the factory.

Key Features

• Integrated Serrated Flange — The built-in serrated flange bites into the mating surface to resist loosening under vibration, which is critical on power buggies subject to constant movement and load stress.
• Correct 1/2-13 Thread Specification — Threaded to the exact 1/2-13 UNC standard, this nut installs directly onto the original fastener locations without chasing threads or sourcing adapters.
• Broad WB16A Family Coverage — A single part number covers the entire WB16A Power Buggy lineup across gasoline, diesel, electric, and combination-drive variants, as well as the G155 Mobile Generator.
• Genuine OEM Material Grade — Manufactured to Wacker Neuson's original hardness and finish specifications, ensuring proper clamp load and corrosion resistance in outdoor and heavy-use environments.
• Torque Retention Under Load — The serrated flange design maintains clamping force where standard hex nuts may back off over time, helping critical fastened joints stay secure during operation.

A hex serrated flange nut combines a standard hex nut with an integrated washer-like flange that features serrations on its bearing face. The serrations grip the mating surface when torqued, creating mechanical resistance to rotation that prevents the nut from backing off under vibration or dynamic loads. On equipment like the WB16A Power Buggy — which operates across rough terrain and transmits significant vibration through its frame — maintaining fastener clamp load is essential to structural integrity and safe operation. A nut that has backed off or been replaced with an incorrect substitute can allow joints to shift, leading to accelerated wear on surrounding components or fastener failure.

Part Details

Compatibility & Fitment

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Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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