Lock Nut, Atlas Copco part number 0291112815, listed at Crowder Supply as AC-0291112815. It carries the clamp load on its stud or bolt. On an impact tool, thread and face condition matter a nut that has been run down over damaged threads will not hold torque.
It appears on the LP 9-20P 9-20E Hydraulic Power Pac and PAC P9 Hydraulic Power Pac, and on 1 other machine breakdown. Check it against the reference number on the diagram first; serial breaks change what fits.
Everything else on that machine is one page away on the parts breakdown index; complete tools are on the Atlas Copco tool range. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 0291112815
- Manufacturer: Atlas Copco
- Crowder SKU: AC-0291112815
- Listed on breakdowns for: LP 9-20P 9-20E Hydraulic Power Pac, PAC P9 Hydraulic Power Pac, CP 1210 1210S 1210SVR Paving Breaker

