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No. 25, B Style, .250" plain bore SS

All dimensions are nominal values and for reference only
Unit of Measure

Sprocket Specifications

Stock Bore Diameter

N/A 0.250 in

Hub Diameter

N/A 0.625 in


N/A 0.500 in



No. Teeth

N/A 12

Outside Diameter

N/A 1.083 in

Pitch Diameter

N/A 0.966 in

Caliper Diameter

N/A 0.836 in
Max. Bore1 N/A 0.375 in


N/A 0.060 lb

Tooth Nominal Width

N/A 0.110 in

Chain Technical Data


N/A 0.250 in

Chain Size

N/A 25

Inside Width 

N/A 0.125 in

Roller Diameter 

N/A 0.130 in
  • 1 Dimensions shown allow for standard keyway with set screw at 90°.
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