This is Chicago Pneumatic part number 470W214825 washer, stocked at Crowder Supply as CP-470W214825. It sits under the fastener to preserve the mating face and hold tension in a joint that vibrates constantly.

The full diagram library is where to start if you are working back from a machine or send the model and serial and we will confirm it. Complete tools sit on the CP tool catalog. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.

• Part number: 470W214825
• Manufacturer: Chicago Pneumatic
• Crowder SKU: CP-470W214825