Rifle Bar Nut, American Pneumatic Tool part number 17913, listed at Crowder Supply as APT17913. 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 138 Rock Drill. 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 American Pneumatic catalog 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: 17913
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT17913
- Listed on breakdowns for: 138 Rock Drill

