This is American Pneumatic Tool part number 1280583045 screen reducing bushing, stocked at Crowder Supply as APT285. It is part of the fluid end of the machine, where wear tracks with the abrasiveness of what is being moved rather than with hours alone.
Crowder’s breakdowns list this part on the 133-ST/1133-ST Rivet Buster. Compare it to the reference callout on the diagram to be sure it is the position you need.
If you need the parts around it, the parts diagram library has the full breakdown library, and the APT lineup covers the machines themselves. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 1280583045
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT285
- Listed on breakdowns for: 133-ST/1133-ST Rivet Buster
