Patent ID: 7341409

Claim:
A one-piece male part of a tool, comprising: a radially and axially supporting and positioning portion disposed at a first location along an axis of the male part of the tool for radially and axially supporting and positioning the male part of the tool at a front end of a holder, and an externally threaded portion disposed at a second location along the axis of the male part of the tool for engaging an internally threaded portion of the holder, wherein a largest diameter of the externally threaded portion is smaller than a smallest diameter of the radially and axially supporting and positioning portion, and a transition portion is disposed along the axis of the male part of the tool between a radially largest portion of the radially and axially supporting and positioning portion and the externally threaded portion, and the transition portion extends radially for a distance greater than a radial height of threads of the externally threaded portion.