Thread Size: 2.548-18
Threads per Inch: 18
Nominal Thickness - Inch: 0.573
Nominal Thickness - Millimeter: 14.554
Inch - Metric: Inch

Outside Diameter - Inch: 3.38
Outside Diameter - Millimeter: 85.852

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

Thread Size: 1.767-18
Threads per Inch: 18
Nominal Thickness - Inch: 0.448
Nominal Thickness - Millimeter: 11.379
Inch - Metric: Inch

Outside Diameter - Inch: 2.536
Outside Diameter - Millimeter: 64.414

Thread Size: 2.36-18
Threads per Inch: 18
Nominal Thickness - Inch: 0.541
Nominal Thickness - Millimeter: 13.741
Inch - Metric: Inch

Outside Diameter - Inch: 3.161
Outside Diameter - Millimeter: 80.289

Chain Pitch - Inch: 0.625
Chain Pitch - Millimeter: 15.875
Chain Type: Roller Chain
Bearing Type: Ball Bearing
Inch - Metric: Inch

Outside Diameter - Inch: 3.729
Chain Size: 50
Material: Steel
Length Thru Bore - Millimeter: 18.29
Length Thru Bore - Inch: 0.72