"1N6-10010" is a part number used by Nissan for a variety of components, such as engine and transmission parts. Without more context, it is not possible to determine the specific component to which this part number refers.
"31N6-10050" does not provide enough information to determine what it refers to, as it could be a part number, serial number, or some other type of code.
"K3V112DT-9C32-12T" is a model number for a hydraulic pump produced by Kawasaki. Here is a basic specification for this model:
Displacement: 112 cc/rev
Max. pressure: 35 MPa
Max. speed: 2600 rpm
Weight: 95 kg (without oil)
Without additional information or context, it is difficult to provide more specific specifications or details for these codes.