Thread Size: 2.157-18
Threads per Inch: 18
Nominal Thickness - Inch: 0.51
Nominal Thickness - Millimeter: 12.954
Inch - Metric: Inch

Outside Diameter - Inch: 2.974
Outside Diameter - Millimeter: 75.54

Chain Pitch - Inch: 0.5
Chain Pitch - Millimeter: 12.7
Pitch Diameter - Inch: 2.721
Inch - Metric: Inch
Outside Diameter - Inch: 2.974

Chain Size: 40
Material: Carbon Steel
Other Features: Taper Lock Bushing
Pitch Diameter - Millimeter: 69.12
Mounting Method: Bushed