This is American Pneumatic Tool part number 1280582596, listed as 01534 before the renumbering piston – 3″, stocked at Crowder Supply as APT1534. The piston is the striking mass of the chipping hammer; its condition sets impact energy, so scoring, mushrooming, or lost diameter shows up directly as reduced production.
Crowder’s breakdowns list this part on the M43 M44 4-Bolt Chipping Hammer and CP 1260SPDR Spike Driver, and on 1 other machine. Pull up the diagram and confirm the reference number for your serial before ordering.
If you need the parts around it, the parts diagram library has the full breakdown library, and the American Pneumatic Tool range covers the machines themselves. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 1280582596
- Previous part number: 01534
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT1534
- Listed on breakdowns for: M43 M44 4-Bolt Chipping Hammer, CP 1260SPDR Spike Driver, 260 Chipping Hammer Series

