Sprocket, 40 Chain Size, 3/4 Bore Dia., 48 # of Teeth
645 in, Bore Type Plain, Chain Number 40, Finish Black Oxide, For Pitch Type Single Pitch, Hub Diameter 3 1/2 in, Hub Projection 0.93 in, Pitch Diameter 7.Sprocket, Bore Diameter 3/4 in, For Chain Pitch 1/2 in, For Number of Strands Single, Hub Type One Side, Material Steel, Maximum Bore Diameter 2 3/8 in, Number of Teeth 48, Outside Diameter 7.841 in, Includes Set Screws, Keyway Yes, Keyway Depth 3/32 in, Keyway Width 3/16 in, Length through Bore 1 1/8 in, Material Grade 1045.