Ordering by number: this is 410241550, cross-referenced to 66640, the Tamco/Toku front head bolt nut. This part holds and guides the steel. Elongation of the shank bore is the usual reason for replacement, well before any crack appears.
The published breakdown lists it on the TPB 60 Paving Breaker and TPB 90 Paving Breaker. Pull up the diagram and confirm the reference number for your serial before ordering.
If you need the parts around it, the parts breakdown index has the full breakdown library, and the Toku tool catalog covers the machines themselves. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 410241550
- Also listed as: 66640
- Manufacturer: Tamco/Toku
- Crowder SKU: TK-410241550
- Listed on breakdowns for: TPB 60 Paving Breaker, TPB 90 Paving Breaker

