Roller Chain, Chain Construction Riveted Pin, Material Steel, Chain Overall Width 45/64 in, Chain Number 40, Roller Diameter 5/16 in, Finish Plain, Pitch 1/2 in, Link Type Connecting, Number of Strands 1, Application Mechanical Drives, Heavy Series No, Pin Outside Diameter 5/32 in, Plate Height 21/32 in, 45/64 in, Plate Thickness 1/16 in, Standards ANSI B 29.1, DIN8196, JIS1801