This International Standard specifies the main dimensions of top piates with three fixing holes for industrial castors.
It applies to the top piates defined in 4.2.2 of ISO 2163 and used for the swivel castors defined in 4.1.2 of that document.
DS/ISO 3101:1983 history
1983DS/ISO 3101:1983 Wheelsand castors. Triangular top plates with three fixing holes