Torsion Spring carries American Pneumatic Tool part number 1280583381, previously 18074 and is stocked here under APT18074. Springs in a rivet buster fatigue with cycle count rather than age, so a control that has gone lazy or fails to return is usually this part rather than the component it drives.
Crowder’s breakdowns list this part on the 133-ST/1133-ST Rivet Buster. Check it against the reference number on the diagram first; serial breaks change what fits.
Everything else on that machine is one page away on the full diagram library; complete tools are on the American Pneumatic Tool range. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 1280583381
- Previous part number: 18074
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT18074
- Listed on breakdowns for: 133-ST/1133-ST Rivet Buster
