This is Atlas Copco part number 3111003980 back head – complete, stocked at Crowder Supply as AC-3111003980. This is the upper housing of the tool, taking the through-bolt load and the inlet connection.

The parts diagram hub 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 Atlas Copco lineup. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.

• Part number: 3111003980
• Manufacturer: Atlas Copco
• Crowder SKU: AC-3111003980