Lock Nut, Atlas Copco part number 3378512273, listed at Crowder Supply as AC-3378512273. It secures its joint against constant vibration, which is why it is treated as a replaceable item rather than a permanent one.
You will find it on the diagram for the COR 5/15 Hydraulic Core Drill and MHC5 Hydraulic Core Drill, and on 1 other machine. Check it against the reference number on the diagram first; serial breaks change what fits.
If you need the parts around it, the parts diagram hub has the full breakdown library, and the Atlas Copco lineup covers the machines themselves. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3378512273
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3378512273
- Listed on breakdowns for: COR 5/15 Hydraulic Core Drill, MHC5 Hydraulic Core Drill, LCD 500 & LCD 1500 Hydraulic Core Drill
