Maintain the safety and performance of your heavy-duty wheel ends with the Dayton 06-421 Spindle Nut. This 8-point spindle nut is engineered to match the fit and function of the original equipment on specified Rockwell and Dana axles.Built from premium materials to resist thread fatigue, it provides a secure and reliable solution for tapered spindles on steer, drive, and trailer applications.
Precision Replacement: Engineered to meet factory specifications for a seamless fit on Rockwell FU, Rockwell U, and Dana A45/A65 axle drives.
Reliable Fix: The perfect replacement for original spindle nuts that have failed due to fatigue or were lost during maintenance.
Heavy-Duty Construction: Manufactured from high-grade materials to ensure high torque retention and a long service life.
Trustworthy Quality: Backed by over a century of automotive expertise and a U.S.-based team of product specialists.
| Attribute | Details |
| Part Number | 06-421 |
| Part Type | Spindle Nut |
| Nut Type | 8-Point (No Dowel Pin) |
| Spindle Type | Tapered |
| Application | Rockwell FU, Rockwell U; Dana A45, A65 |
| Axle Type | Steer; Drive; Trailer |
| Thread Size | 3.37-12 in |
| Across the Flats | 4.37 in |
| Height | 0.37 in |
| Weight | 1.00 lbs |
| Associated Kit | 06-4211 |
This spindle nut is a direct functional equivalent to the following industry part numbers:
Rockwell/Meritor: 1227-P-328
Dana: M10HN114
Spicer: 12-422, 12422
PACCAR: L1356
VMRS: 011-001-016
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
