Stop Spring Seat carries American Pneumatic Tool part number 1280582353 the number that superseded 18401 and is stocked here under APT18401. It supplies the return force for its assembly in the tool. A spring that has taken a set gives soft or sticky action long before it actually breaks.

The parts breakdown index is where to start if you are working back from a machine or send the model and serial and we will confirm it. Complete tools sit on the American Pneumatic catalog. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.

• Part number: 1280582353
• Previous part number: 18401
• Manufacturer: American Pneumatic Tool
• Crowder SKU: APT18401