This is the Chicago Pneumatic nut – hex part number R000549, Crowder SKU CP-R000549. 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 CP 32A B B-O Rock Drill. 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 diagram library; complete tools are on the Chicago Pneumatic tool range. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: R000549
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R000549
- Listed on breakdowns for: CP 32A B B-O Rock Drill

