Chuck – 7/8 X 3-1/4″ Hex, American Pneumatic Tool part number 1280583765 the number that superseded 02385, listed at Crowder Supply as APT2385. 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.
You will find it on the diagram for the 137 Rock Drill. The complete machine is the APT 137 Pneumatic Rock Drill. Compare it to the reference callout on the diagram to be sure it is the position you need.
Need the parts around it? They are on the same breakdown, and the parts breakdown index covers every machine we publish. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 1280583765
- Previous part number: 02385
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT2385
- Listed on breakdowns for: 137 Rock Drill

