Multiquip 10235 Countersunk External Shakeproof Washer

The Multiquip 10235 Countersunk External Shakeproof Washer is a genuine OEM component designed for a wide range of Whiteman and Multiquip walk-behind and ride-on power trowel models. This includes B Series, BA Series, J Series, JA Series, C Series, CA Series, HDA Series, and mechanical ride-on trowel platforms such as JTN, HTN, BHN, JRT, BRT, and HRT equipment. As a genuine Multiquip OEM part, the part is manufactured to the same tolerances and material specifications as the original hardware, ensuring correct installation and lasting performance in trowel applications. DHS Equipment supplies this part direct, so you can order with confidence knowing you are getting the right component for your machine.

Key Features

• Genuine OEM Hardware Grade — Manufactured to Multiquip's original material and hardness specifications, delivering the same clamping integrity and vibration resistance as the hardware installed at the factory.
• Shakeproof External Tooth Design — The external serrated tooth profile bites into mating surfaces under torque, resisting loosening caused by the continuous vibration inherent in power trowel operation.
• Countersunk Profile for Flush Seating — The countersunk form seats flush against angled or recessed surfaces, maintaining proper fastener preload without protruding or creating interference with adjacent components.
• Broad Trowel Platform Coverage — Verified for walk-behind models across the B, BA, J, JA, C, CA, and HDA Series, as well as mechanical ride-on trowel platforms including JTN, HTN, BHN, JRT, BRT, and HRT families.
• Fastener Integrity Under Load — A correctly seated shakeproof washer maintains bolt clamping force during operation, preventing fastener back-off that can lead to component misalignment or structural loosening on the trowel assembly.

A countersunk external shakeproof washer is a hardened fastener component that serves two functions simultaneously: it distributes clamp load across the mating surface to prevent fastener pull-through, and its external serrated teeth grip into the surface under torque to resist vibration-induced loosening. In power trowel applications — where engines and rotating blade assemblies generate sustained vibration — standard flat washers can allow bolts to gradually back out over time. When a shakeproof washer fails or is omitted, fasteners can work loose, leading to play in critical assemblies, increased wear on surrounding components, and potential structural failures during operation.

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.