Ordering by number: this is 3121059900, the Atlas Copco washer. It spreads clamp load and protects the face under the fastener routine hardware, but the wrong one changes how the joint holds torque.
You will find it on the diagram for the BBC 16W WS Pusher Leg Drill and BBC 34W WS Pusher Leg Drill. It comes off the Atlas Copco BBC 16W Pneumatic Rock Drill. Pull up the diagram and confirm the reference number for your serial before ordering.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts breakdown index. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 3121059900
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121059900
- Listed on breakdowns for: BBC 16W WS Pusher Leg Drill, BBC 34W WS Pusher Leg Drill
