Steel Retainer Bolt Bushing is the Tamco/Toku service part carried under part number 410201640. It holds the working steel in the clay digger. Retention hardware is a wear and safety item a stretched or cracked retainer lets the steel move, which chews the front head.
The published breakdown lists it on the TCD 20 Clay Digger and TPB 30 Paving Breaker, and on 2 other machines. Worth matching the reference number on the diagram against your own machine before you order the same part number can sit in more than one position.
Use the parts diagram library to work through the rest of the assembly, or the Toku tool catalog if you are pricing a replacement machine. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 410201640
- Manufacturer: Tamco/Toku
- Crowder SKU: TK-410201640
- Listed on breakdowns for: TCD 20 Clay Digger, TPB 30 Paving Breaker, TCD 30 Clay Digger, TRC 30 Trench Digger

