It looks like you have a pattern here of moving to the next part in the sequence! While you mentioned 06-224, the technical specifications you provided are actually for the Dayton 06-226, which is a significantly larger Castle Nut designed for Fruehauf Propar axles.
Here is the professional website listing for the Dayton 06-226:
The Dayton 06-226 is a heavy-duty castle spindle nut specifically engineered for Fruehauf Propar trailer axles. Designed for parallel spindles, this 8-point nut features a "castle" design for use with a cotter pin or locking key, ensuring maximum safety and security for heavy-load trailer wheel ends.
Specialized Fit: Precision-engineered for Fruehauf Propar axle systems with parallel spindles.
Castle Nut Design: Features a slotted (castle) head to allow for positive locking, preventing the nut from backing off under high-vibration conditions.
Industrial Strength: Built for high-capacity trailer applications, weighing in at a robust $2.20 \text{ lbs}$.
Certified Quality: Rated with a Safety Rating of 9, meeting rigorous standards for heavy-duty commercial transport.
| Attribute | Value |
| Part Number | 06-226 |
| Nut Type | 8-Point Castle Nut |
| Thread Size | 3.50 in |
| Across the Flats | 4.81 in |
| Height | 1.12 in |
| Spindle Type | Parallel |
| Axle Application | Fruehauf Propar |
| Package Contents | (1) Castle Nut |
This part is a direct replacement for the following OEM and aftermarket numbers:
| Manufacturer | Part Number | Notes |
| Fruehauf | AXA-0410-001 / ACE-8510-001 | Original Equipment Ref |
| Meritor | R002550 | Spindle Nut Fruehauf |
| Euclid | E2550 | Heavy-Duty Aftermarket |
| Holland | A-CE8510-1 | Direct Interchange |
| Paccar | L1395 | Direct Interchange |
| Dana/Eaton | M10HN172 / 4-2202 | Direct Interchange |
| Trailmobile | 700714 | Direct Interchange |
| Spicer | 12-400 / 12400 | Indirect Interchange |
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