The Dayton 06-420 Spindle Nut is a heavy-duty wheel-end component engineered to match the precise fit and performance of original equipment. Specifically designed for tapered spindles on Rockwell FU, Rockwell U, and Dana A45/A65 axles, this 8-point nut features an integrated dowel pin for secure locking and adjustment.
Whether you are servicing a steer, drive, or trailer axle, this spindle nut provides a reliable solution for replacing components that have failed due to thread fatigue or have been lost during maintenance.
Direct Replacement: Precision-matched to the fit and function of the factory part for specified years, makes, and models.
Integrated Dowel Pin: Features a specialized 8-point design with an integrated dowel pin for accurate indexing and locking.
Durable Construction: Manufactured from high-quality materials to ensure high tensile strength and a long service life under heavy loads.
Trusted Quality: Backed by over a century of automotive experience and a U.S.-based team of product experts.
| Attribute | Details |
| Part Number | 06-420 |
| Part Type | Spindle Nut |
| Nut Type | 8-Point with Dowel Pin |
| Spindle Type | Tapered |
| Thread Size | 3.37-12 in |
| Across the Flats | 4.87 in |
| Application | Rockwell FU, Rockwell U; Dana A45, A65 |
| Axle Type | Steer; Drive; Trailer |
| Height | 0.37 in |
| Weight | 1.00 lbs |
| Package Contents | (2) Inner Nuts |
| Related Kit | 06-4211 |
The Dayton 06-420 is a direct functional equivalent to the following industry part numbers:
Rockwell/Meritor: 1227-A-547
Dana: M10HN115
Spicer: 12-420, 12420
PACCAR: L1358
VMRS: 011-001-016
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