This is American Pneumatic Tool part number 1280583475, previously 00233 lock washer, stocked at Crowder Supply as APT233. It sits under the fastener to preserve the mating face and hold tension in a joint that vibrates constantly.
The published breakdown lists it on the 125 Clay Digger. That machine is the APT 125 Pneumatic Clay Digger if you are pricing a replacement rather than a repair. Check it against the reference number on the diagram first; serial breaks change what fits.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts breakdown index. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 1280583475
- Previous part number: 00233
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT233
- Listed on breakdowns for: 125 Clay Digger

