The APT 133 (M133CN) is the 8 in.-stroke closed-nose rivet buster in American Pneumatic Tools' U.S.-manufactured demolition lineup. The 8 in. piston stroke is the most-commonly specified rivet-buster stroke length, long enough to reach through standard bridge-deck and tank-wall sections in a single blow while keeping cycle rate at 1,100 BPM.
- Workhorse 8 in. stroke with 1-3/16 in. bore, deep case-hardened alloy cylinder, and heavy-duty upper and lower sleeves.
- Closed-nose construction keeps debris out of the front-end assembly during rebar and torch-cut steel work.
- Delivers 1,100 BPM at 42-46 CFM consumption at 90 PSI across all three handle configurations.
- T-handle: 36 lb, 32 in. overall, 3/8 in. male inlet; D-handle and pistol-grip: 30 lb, 22-1/2 in. overall, 1/2 in. NPT female inlet.
- All variants share Jumbo 11X (.866 in.) shank, adjustable exhaust deflector, and drop-forged handle construction.
- Specified for bridge-deck repair, reinforced concrete demolition, tank cutting, structural-steel rivet head removal, and horizontal demolition.
- Crowder Supply stocks the full Jumbo 11X rivet-buster steel range plus M133CN cylinders, retainers, valves, throttle assemblies, sleeves, and exhaust deflectors.
- Old MPNs 19444 (T-handle), 18768 (D-handle), and 18757 (pistol grip) cross-reference to APT 1280174101, 1280583181, and 1280583339.

















