Wacker Neuson 5000116151 Nut 1/4-28 Hex Serrated Flange Left Hand

The Wacker Neuson is a genuine OEM Nut 1/4-28 Hex Serrated Flange Left Hand designed for the WB16A Power Buggy series and the G155 Mobile Generator Skid Mounted. As a direct OEM replacement sourced through the Wacker Neuson parts program, the is manufactured to the exact thread specification and material standard required for these machines. This nut fits the full range of WB16A variants — including electric, dual-engine, four-wheel steering, and combination configurations — making it a high-demand service part across a wide spread of Power Buggy models. Keeping the correct hardware on hand means service calls stay short and machines get back to work without compromise.

Key Features

• Left-Hand Thread Specification: — Cut to a precise 1/4-28 left-hand thread pitch, ensuring correct engagement on fastener positions that require reverse-thread hardware to resist loosening under rotation.
• Serrated Flange Locking: — The integrated serrated flange bites into the mating surface on installation, providing built-in resistance to vibration-induced loosening without a separate lock washer.
• Genuine OEM Part: — Sourced directly from Wacker Neuson, this nut meets the exact dimensional and material requirements specified for the WB16A Power Buggy and G155 generator applications.
• Wide WB16A Family Coverage: — Compatible across the full WB16A lineup, including electric, diesel, four-wheel steering, and combination-drive variants, as well as the G155 Mobile Generator Skid Mounted.
• Drop-In Replacement: — Matches the original fastener in thread form, flange diameter, and hex drive size, so installation requires no modification to the surrounding hardware or mating components.

A hex serrated flange left-hand nut serves a specific and intentional purpose on rotating or counter-rotating assemblies. The left-hand thread means the nut tightens in the opposite direction to standard fasteners — this is critical on shafts or spindles where normal rotation would gradually unwind a right-hand nut, leading to loosening, component play, or detachment. The serrated flange adds a secondary locking action by creating multiple bite points against the mating surface, distributing clamping load and resisting vibration. When this type of nut fails or is replaced with an incorrect thread-hand fastener, the result can range from progressive loosening to sudden loss of the secured component — making correct part identification essential during any service or rebuild involving this hardware.

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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