Wacker Neuson 5000025657 Lock Washer 5/16 Hi-Collar

The Wacker Neuson Lock Washer 5/16 Hi-Collar is a genuine OEM fastening component designed for RT82-SC2, RT56-SC2, RTx-SC2, RTL82-SC3, RTLx-SC3, RTK82-SC3, and RTKx-SC3 remote-controlled vibratory trench rollers, as well as WB16A series power buggies. As a genuine Wacker Neuson part, the is manufactured to the same specification as the original hardware, ensuring correct seating and clamping load across the fastener joints where it is used. Verify your machine's model and serial number against the fitment list before ordering to confirm this is the correct washer for your application.

Key Features

• Genuine OEM Hardness and Geometry — Hi-collar profile delivers the increased bearing surface and bite depth needed to resist loosening under the continuous vibration loads generated by trench roller and power buggy operation.
• Drop-In Hardware Replacement — Sized at 5/16 inch to seat directly onto existing fastener threads with no rework to mating hardware or mounting surfaces.
• Broad Trench Roller Fitment — Compatible across the RT82-SC2, RT56-SC2, RTx-SC2, RTL82-SC3, RTLx-SC3, RTK82-SC3, and RTKx-SC3 model families, covering both SC2 and SC3 generation remote-controlled trench rollers.
• WB16A Power Buggy Coverage — Also fits the full WB16A series power buggies, including AE, AF, AS, AD, and combination suffix variants, making this a versatile stocking item across multiple machine types.
• Maintains Joint Integrity Under Load — A worn or missing lock washer allows fasteners to back out during operation, introducing movement at critical joints. Replacing it promptly keeps hardware torqued to spec and prevents secondary damage to surrounding components.

A hi-collar lock washer is a hardened fastening component that sits between a bolt head or nut and the mating surface to prevent the fastener from loosening due to vibration or dynamic loading. The raised collar increases the contact area against the bolt head, while the serrated or split profile bites into both surfaces to resist rotation. On vibratory trench rollers and power buggies — machines that generate and transmit significant vibration during normal operation — maintaining correct fastener preload is essential to structural integrity and safe function. A missing or flattened lock washer allows hardware to work loose progressively, which can lead to component misalignment, accelerated wear at the joint, or fastener loss.

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.