Bushed Roller Chain Sprocket For Bushing Size 1610 For Bushing Type Split Taper For Chain Pitch 3/4 in Material Steel Number of Teeth 15 Outside Diameter 3.979 in Pitch Diameter 3.607 in Chain Number 60 For Number of Strands Single Maximum Bore Diameter 1 5/8 in Finish Black Oxide Hub Diameter 2 15/32 in Hub Projection 0.541 in Hub Type One Side Length through Bore 1 in Standards ANSI B29.1 BIS Teeth Heat Treatment Hardened Teeth Tooth Width 0.459 in