Cutting tool and method for manufacturing machined product

A cutting tool, comprising:

• a holder having a columnar shape extended from a first end to a second end along a rotation axis, and comprising a pocket located on a side of the first end;
• a shim member located in the pocket;
• a first screw to fix the shim member to the pocket;
• and
• an insert in contact with the shim member on a front side of a rotation direction of the rotation axis,
• wherein the shim member comprises:
• an outer side surface located on a side of an outer periphery of the holder,
• an inner side surface located on a side opposite to the outer side surface and located closer to the rotation axis than the outer side surface,
• a front side surface located on a front side in the rotation direction,
• a rear side surface located on a side opposite to the front side surface, and
• a first hole opening into the outer side surface and the inner side surface,
• the pocket comprises a second hole corresponding to the first hole,
• the first screw is inserted into the first hole and the second hole, and
• a first central axis of the first hole is located ahead of a second central axis of the second hole in the rotation direction, such that the first central axis is offset from the second central axis in a circumferential direction before inserting and securing the first screw to the shim member and the pocket.