Ordering by number: this is 0291110800, the Chicago Pneumatic Lock Nut M6. It is a self-locking nut.
You will find it on this Chicago Pneumatic BRK 55 parts diagram: CP BRK 55 – Standard handle. Check it against the reference number on the diagram first; serial breaks change what fits.
The parts diagram library indexes every breakdown we publish, and the Chicago Pneumatic tool range has the tools these parts go into. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 0291110800
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-0291110800
- Replaces: 3371814716
- Diagram note: replaces 3371814716
- Listed on breakdowns for: CP BRK 55 – Standard handle
