Secure your heavy-duty wheel end with the Dayton 06-203 Inner Spindle Nut. Purpose-built for Dana and Rockwell 17.0k to 22.0k trailer axles, this nut features an integrated dowel pin designed to lock perfectly with your spindle washer. Forged from high-grade steel, it provides the fatigue resistance and precision fit required for long-haul reliability.
Integrated Dowel Pin: Features a precision-placed pin to ensure positive engagement with the lock washer, preventing nut movement.
Direct OEM Replacement: Engineered to match the exact thread pitch and dimensions of factory-original hardware for tapered spindles.
Fatigue Resistant: Constructed from quality materials to handle high torque applications and extreme road vibrations without backing off.
Century of Quality: Backed by Dayton Parts' 100+ years of automotive expertise and rigorous U.S. product standards.
| Feature | Details |
| Part Number | 06-203 |
| Application | Dana / Rockwell 17.0k-22.0k |
| Nut Type | Inner Nut (8-Point with Dowel Pin) |
| Thread Size | 2.62-16 in |
| Across the Flats | 3.81 in |
| Axle Type | Trailer (Tapered Spindle) |
| Height | 0.37 in |
| Weight | 0.65 lbs |
This inner spindle nut is a direct replacement for the following industry part numbers:
Meritor: 1227C549, R000540, T6880
Dana/Spicer: M10HN101, M10HN158, 12391, 10406
Hendrickson: A1986
PACCAR: L176
Ford: C1TT4255A
Eaton: 820394, F1529
Standard Forge: 103103002
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