Ordering by number: this is 3121500084, the Atlas Copco adaptor. It makes the air or hydraulic connection to the tool. Thread and sealing-face condition here is the difference between full pressure at the tool and a slow leak nobody notices.
If you are working from a machine rather than a part number, start at the full diagram library, or send us the model and serial and we will match it. Machines themselves are on the Atlas Copco lineup. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 3121500084
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121500084