Chuck – 1 X 4-1/4″ Hex carries American Pneumatic Tool part number 1280583801, listed as 02604 before the renumbering and is stocked here under APT2604. Retaining the tool steel is its whole job. Worn retention lets the shank hammer against the bore and turns a cheap part into an expensive front head.
It shows up in the parts breakdown for the 137 Rock Drill. The complete machine is the APT 137 Pneumatic Rock Drill. Pull up the diagram and confirm the reference number for your serial before ordering.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the full diagram library. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 1280583801
- Previous part number: 02604
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT2604
- Listed on breakdowns for: 137 Rock Drill

