a non - impact keyless chuck suitable for use with manual or powered drivers is disclosed . the chuck comprises a body which carries a rotatable split nut having a relatively fine thread and a plurality of slidable jaws , which may be identical , driven by the rotatable nut . an anti - friction bearing is disposed between the rotatable nut and a bearing thrust ring mounted on the body . a clutch or torque limiting mechanism is provided to limit the tightening torque to a predetermined value while the loosening torque may be limited or unlimited . the front sleeve , and rear sleeve , if used , may be formed from a structural plastic to reduce manufacturing costs . a relatively soft elastomeric grip boot may be placed on the front sleeve to improve the grip and temporarily restrain and center the tool during chuck tightening or loosening operations . a relatively soft elastomeric grip boot may also be placed on the rear sleeve , if used .