Chuck Nut, Atlas Copco part number 3115122100, listed at Crowder Supply as AC-3115122100. It holds the working steel in the rock drill. Retention hardware is a wear and safety item a stretched or cracked retainer lets the steel move, which chews the front head.
Crowder’s breakdowns list this part on the RH 658L/LS/LS-01 Rock Drill and RH 656W Rock Drill. The complete machine is the RH 658 L Surface Rock Drill. Check it against the reference number on the diagram first; serial breaks change what fits.
Need the parts around it? They are on the same breakdown, and the parts diagram hub covers every machine we publish. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3115122100
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3115122100
- Listed on breakdowns for: RH 658L/LS/LS-01 Rock Drill, RH 656W Rock Drill
