Ordering by number: this is 3376117071, the Chicago Pneumatic Protective Nut. It is the nut that protects the accumulator charging screw.
You will find it on 2 Chicago Pneumatic BRK 55 parts diagrams: CP BRK 55 – Accumulator repair kit (CP-3310101845); CP BRK 55 – Accumulator kit. 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: 3376117071
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-3376117071
- Diagram note: in the kit; also sold separately
- Listed on breakdowns for: CP BRK 55 – Accumulator repair kit (CP-3310101845); CP BRK 55 – Accumulator kit
