The present invention relates to a method and devices for mounting and securing a handle (110) on a power driven hand tool (100) The power driven hand tool (100) is provided with a main body (104) comprising a housing (106) with a drive unit for driving a working member of the tool (100), a handle (110) for user operation of the tool (100), and a connecting part (112) for connecting the handle (110) with the main body (106). Further, a front end of the handle (110) may be inserted into a rear end of the connecting part (112) in a first rotational position in relation to the connecting part (112), and the handle (110) may be rotated into a second rotational position in relation to the connecting part (112). In the second rotational position, the handle (110) and the connecting part (112) are locked to each other by means of an automatic locking mechanism.