Maintain accurate wheel bearing preload and lock down your trailer hub assembly. Engineered specifically for 3,500lb and 6,000lb trailer axles equipped with E-Z Lube or standard D-shaped spindles, this 1in ID spindle D-washer prevents the outer spindle nut from turning against the bearing. Featuring a flat inner side that slides over the milled flat of the spindle shaft, it provides a stable, non-rotating barrier between the outer bearing cone and the spindle nut during high-speed towing.
Key Features
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Universal 3.5K to 6K Axle Fitment: Compatible with standard 3,500lb (5-lug) and 6,000lb (6-lug) trailer axles using 1in D-spindles.
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D-Shaped Inner Flat: Machined with a flat inner side to match the milled spindle flat, ensuring the washer remains stationary and cannot spin with the hub.
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1-Inch Precision Inner Diameter: Formed to exact tolerances for a smooth, flush fit over standard 1in-14 threaded spindle shafts.
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Heavy-Duty Stamped Steel: Manufactured from durable, zinc-plated carbon steel to resist corrosion, rust, and axial pressure deformation.
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Protects Bearing & Spindle Threads: Keeps the outer spindle nut from over-tightening or backing off, ensuring your wheel bearing preload stays within proper specifications.
Product Specifications
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Product Type: Trailer Spindle Washer/D-Washer
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Washer Style: D-Shape (Flat Inner Edge)
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Inner Diameter (ID): 1.000in
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Axle Capacity Compatibility: 3,500lbs (3.5K) & 6,000lbs (6K)
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Spindle Type: D-Cut / E-Z Lube & Standard 1in Spindles
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Material: Zinc-Plated Carbon Steel
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Recommended Applications: Boat Trailers, Utility Trailers, Equipment Haulers, Travel Trailers, and Axle Hub Service
