Ordering by number: this is 16770, the American Pneumatic Tool pawl spring flat wire. It drives or indexes rotation. When it wears, the tool still hammers but stops turning the steel evenly.

If you are working from a machine rather than a part number, start at the parts breakdown index, or send us the model and serial and we will match it. Machines themselves are on the American Pneumatic Tool range. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.

• Part number: 16770
• Manufacturer: American Pneumatic Tool
• Crowder SKU: APT16770