Retainer Ring, Chicago Pneumatic part number 9245999921, listed at Crowder Supply as CP-9245999921. Retaining the tool steel is its whole job. Worn retention lets the shank hammer against the bore and turns a cheap part into an expensive front head.
It shows up in the parts breakdown for the CP 4160 Rivet Buster. That machine is the CP 4160 Pneumatic Rivet Buster if you are pricing a replacement rather than a repair. Pull up the diagram and confirm the reference number for your serial before ordering.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the full diagram library. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 9245999921
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-9245999921
- Listed on breakdowns for: CP 4160 Rivet Buster
