Digital non-standard drill tool connecting mechanism

The utility model relates to the technical field of the connection of drill tools used in oil well and gas well drilling processes in the petroleum and natural gas industries, in particular to a digital non-standard drill tool connecting mechanism which comprises an external thread connector and an internal thread connector, and is characterized in that the medium thread diameters of the internal and the external thread connectors on a reference plane are 5.39 inches; and an APIV-0.038R digital connecting thread tooth type with the taper of 1:6, 4 tooth/inch is adopted. The digital non-standard drill tool connecting mechanism mainly solves the gap in an existing API standard that the sizes of the products connected by a digital rotary shoulder are directly from a medium diameter of 5.0417 inches to the medium diameter of 5.616 inches, and well improves the hydraulic performance of a drill tool connector, so that the drill tool connection has very good use value in practice.