Ordering by number: this is 1280583587, which replaced the older number 00866, the American Pneumatic Tool rifle bar nut. It is part of the rotation mechanism of the rock drill the drive train that indexes the steel between blows. Wear here shows as slow or intermittent rotation.
It shows up in the parts breakdown for the 155 Rock Drill. Check it against the reference number on the diagram first; serial breaks change what fits.
Use the parts diagram library to work through the rest of the assembly, or the APT lineup if you are pricing a replacement machine. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 1280583587
- Previous part number: 00866
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT866
- Listed on breakdowns for: 155 Rock Drill
