This is American Pneumatic Tool part number 1280582336, which replaced the older number 18351 retaining ring – spiral, stocked at Crowder Supply as APT18351. It pins its assembly together. Vibration is what kills them, so they are cheap insurance during any teardown of the tool.

Matching it to a machine? Send us the model and serial and we will confirm the fit, or work back from the full diagram library. Complete tools are on the American Pneumatic Tool range. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.

• Part number: 1280582336
• Previous part number: 18351
• Manufacturer: American Pneumatic Tool
• Crowder SKU: APT18351