This is Atlas Copco part number 9000033800 wing nut, stocked at Crowder Supply as AC-9000033800. It secures its joint against constant vibration, which is why it is treated as a replaceable item rather than a permanent one.
It shows up in the parts breakdown for the RH 656W Rock Drill and BBD 12T-01 TS-01 Rock Drill, and on 3 other machines. Check it against the reference number on the diagram first; serial breaks change what fits.
If you need the parts around it, the full diagram library has the full breakdown library, and the Atlas Copco tool range covers the machines themselves. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 9000033800
- Manufacturer: Atlas Copco
- Crowder SKU: AC-9000033800
- Listed on breakdowns for: RH 656W Rock Drill, BBD 12T-01 TS-01 Rock Drill, BBD 15E ET Rock Drill, RH 572E Rock Drill, RH 571-5L 571-5LS Rock Drill
