EZ Loader Tongued Spindle Washer (Keyed) 290-010827

OEM EZ Loader tongued (keyed) spindle washer designed for trailer axles with keyed spindle shafts—used to maintain alignment, prevent rotation, and support proper hub assembly on heavier-duty axle systems.

This washer features a built-in tongue that fits into the spindle keyway, locking it in place and preventing rotation under load.

• Tongued washer for keyed spindle applications
• Prevents rotation under torque
• Maintains alignment in hub assembly
• Designed for 5200–7000 lb axle systems

👉 Not sure if your spindle is keyed? Call us—we’ll help you match it correctly.

Part Name: Tongued Spindle Washer (Keyed)
Part Number: 290-010827

Fitment Clarification

👉 Not all spindle washers are the same.

• this washer is designed specifically for keyed spindle shafts
• multiple washer types exist (tongued, D-shaped, round)
• dimensions and spindle interface must match exactly

Using the incorrect washer type can result in improper seating, rotation, or premature wear within the hub assembly.

What Makes This Washer Different

This is not a standard round washer.

The integrated tongue fits into the spindle keyway to:

• lock the washer in place
• prevent rotation under torque
• maintain proper alignment of hub hardware

Function & Purpose

• prevents washer rotation under load
• maintains correct positioning of spindle hardware
• supports proper bearing preload and alignment
• acts as a mechanical locking interface within the hub assembly

Typical Applications

• 5200 lb axle systems
• 6000 lb axle systems
• 7000 lb axle systems
• heavy-duty trailer hub assemblies

Specifications

• Inner Diameter: 0.813"
• Outer Diameter: 1.656"
• Thickness: 0.203"
• Style: Tongued (keyed)
• Material: Steel

Why This Part Matters

👉 Designed to lock into the spindle keyway and prevent rotation while maintaining proper alignment.

Using a standard washer or incorrect type can lead to improper seating, hardware movement, and premature wear in the hub assembly.

Designed for keyed spindle shafts—will not fit D-flat or round spindle applications.

Real-World Insight

At 411-Trailers Group, we work with trailer axle systems regularly. One of the most common issues we see is incorrect spindle hardware being used in place of application-specific components like this.

Matching the correct washer to the spindle design—keyed, D-flat, or round—is critical for proper assembly and long-term reliability.