Secure your wheel-end assembly with the Dayton 06-355 Spindle Nut Washer. This specialized "D-style" washer is engineered for tapered steer axles, featuring a flat-edge ID to prevent rotation and integrated holes for locking pins. It is a critical component for maintaining the precise bearing adjustment required for heavy-duty steering axles.
Direct Replacement: Matches the exact fit and function of the factory hardware on specified Eaton and Rockwell steer axles.
D-Style Design: Features a flat-sided inner diameter ("D" shape) to lock against the spindle flat, ensuring the washer remains stationary.
Locking Hole Configuration: Designed with integrated holes to accommodate locking pins, preventing the spindle nut from backing off under vibration.
High-Strength Construction: Built from quality-grade materials to resist compression and wear over a long service life.
Versatile Application: Fits a wide range of popular steer axles, including the Rockwell FF and Eaton EFA12/13 series.
| Specification | Details |
| Part Number | 06-355 |
| Washer Type | D-Style with Holes |
| Inner Diameter (ID) | 1.50 in |
| Outer Diameter (OD) | 3.00 in |
| Height / Thickness | 0.25 in |
| Axle Application | Steer Axle (Eaton EFA12/13, Rockwell FD, FE, FF) |
| Spindle Type | Tapered |
| Safety Rating | 1 |
| Weight | 0.15 lbs |
| Associated Kits | 06-3481, 06-3541 |
This washer is a direct interchange for the following OE and aftermarket parts:
Rockwell (Meritor): 1229-G-475 / 1229G475
Eaton: 42207
Rockwell: FE931 Series
VMRS: 011-001-017
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