Wacker Neuson 5000028746 Lock Nut 1/4-28 Hex Nylon Insert

The Wacker Neuson Lock Nut 1/4-28 Hex Nylon Insert is a genuine OEM fastener designed for the RD7 and RD11 series walk-behind tandem rollers. Sourced directly from Wacker Neuson, this part meets the same specifications as the hardware originally installed at the factory. It is confirmed to fit a wide range of RD7 and RD11 configurations, including the RD7H, RD7A, RD7He, RD7Ye, RD11A, RD11V, and RD11AEC models. When fastener integrity matters on a compaction machine operating under continuous vibration, using the correct OEM-specified hardware keeps critical assemblies secure.

Key Features

• Nylon Insert Locking Action — The nylon insert collar grips the thread under vibration, resisting loosening during continuous compaction cycles common on tandem rollers.
• Correct Thread Specification — Sized to the 1/4-28 UNF fine thread standard, ensuring full thread engagement without stripping when torqued to spec.
• Genuine OEM Part — Supplied as an original Wacker Neuson component, matching the exact material grade and dimensional tolerances of the hardware installed during assembly.
• Broad RD7 and RD11 Fitment — Compatible across RD7H, RD7A, RD7He, RD7Ye, RD11A, RD11V, and RD11AEC tandem roller variants, covering a long production run of walk-behind models.
• Vibration-Environment Fastener — Standard nuts back off under the sustained vibration loads of a double-drum roller; the nylon insert on part 5000028746 maintains clamp load where plain fasteners cannot.

A lock nut with a nylon insert is a one-piece prevailing-torque fastener: once threaded, the nylon collar deforms slightly around the bolt threads to create friction that resists rotation. On a walk-behind tandem roller, where the entire machine vibrates during compaction passes, standard hex nuts can work loose and allow panels, guards, or mechanical components to shift or separate. The 1/4-28 fine thread pattern provides a higher thread count per inch compared to coarse-thread hardware, giving better clamping control in thinner or more precise mounting applications. When this type of fastener fails or is missing, the assembly it secures can develop movement, accelerating wear on mating parts and creating a potential safety concern.

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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