Ordering by number: this is 1280582321, previously 18303, the American Pneumatic Tool nut Ass’y. It carries the clamp load on its stud or bolt. On an impact tool, thread and face condition matter a nut that has been run down over damaged threads will not hold torque.
It is called out in the parts diagram for the 140 Paving Breaker and 140A Airgo Paving Breaker. The complete machine is the APT 140 Pneumatic Paving Breaker. Compare it to the reference callout on the diagram to be sure it is the position you need.
Everything else on that machine is one page away, and the parts diagram hub indexes every breakdown we publish. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 1280582321
- Previous part number: 18303
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT18303
- Listed on breakdowns for: 140 Paving Breaker, 140A Airgo Paving Breaker
