Multiquip 13351 Flat Washer 3/8 Ext Thick High

The Multiquip 13351 is a genuine OEM Flat Washer 3/8 Ext Thick High designed for a wide range of Multiquip and Whiteman power trowels and vibratory screeds, including BH90C, BH11C, BS90C, JH90C, HTN27KTCSL, HTN28KTCSL, and WSHE-A series equipment. As a direct OEM replacement, 13351 is manufactured to the same tolerances and material specifications as the original hardware, ensuring a consistent, correct fit across all listed applications. DHS Equipment stocks this part to keep your Multiquip equipment running without unnecessary delays.

Key Features

• Genuine OEM Hardware Grade — Manufactured to the same thickness, outer diameter, and material hardness spec as the original, so torque loads are distributed correctly across fastened joints.
• Extended Thickness Profile — The thick high profile provides additional load-bearing surface area compared to standard flat washers, helping prevent fastener pull-through under vibration-intensive trowel and screed operation.
• Direct Drop-In Replacement — Matches the original mounting configuration on BH, BS, JH, CA, BA, JA, JS, HTN, JWN, and WSHE-A series equipment — installs with standard 3/8 hardware, no modification needed.
• Broad Cross-Family Fitment — Compatible with Whiteman walk-behind trowels, mechanical ride-on trowels, and WSHE-A vibratory screeds, making it a practical stocking item for fleets running mixed Multiquip equipment.
• Vibration Resistance — The thicker washer profile helps maintain clamping force over time on equipment subject to continuous vibration, reducing the risk of fastener loosening during operation.

A flat washer distributes the clamping load of a bolt or nut across a wider surface area, protecting the material being fastened and preventing the fastener from pulling through or embedding under load. On vibrating equipment like power trowels and truss screeds, washers play a critical role in keeping fastened assemblies secure — inadequate washers can allow bolt heads to work loose over time, leading to misaligned components or accelerated wear at mounting points. Using the correct OEM-spec washer, such as the Multiquip 13351, ensures the joint maintains proper clamping force throughout the service life of the component.

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.