Ordering by number: this is 1280583611, the American Pneumatic Tool retainer – oval collar. 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.
The published breakdown lists it on the 260 Chipping Hammer Series and M43 M44 4-Bolt Chipping Hammer, and on 1 other machine. Compare it to the reference callout on the diagram to be sure it is the position you need.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram library. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 1280583611
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT9431
- Listed on breakdowns for: 260 Chipping Hammer Series, M43 M44 4-Bolt Chipping Hammer, CP 1260SPDR Spike Driver

