Roller Chain Sprocket; 40 Chain; 20 Teeth; 1 Row of Teeth; Hardened Teeth; 3.457" Outside Diameter; 3.196" Pitch Diameter; B-Hub One Side; Bushed Mount; 1610 Bushing; 1/2" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material

Roller Chain; 40 Chain Size; Riveted; 1/2" Chain Pitch; Standard Chain Series; 1 Strand; Carbon Steel; ANSI; 5/16" Roller Diameter; 5/16" Roller Width; 0.06" Plate Thickness; 0.472" Plate Height; Curved; 5/32" Pin Diameter