There is provided a locator device (20) and an associated fixture (10) a d method for supporting a rotatable member (100). The locator device (20) has base (22) and a plurality of flanges (24) extending from the base (22) in an axial direction and arranged circumferentially to define an aperture (25) for at least partially receiving the rotatable member (100) axially. The flanges (24) define slots (26) for receiving radial portions (110) of the rotatable member (100) wit the radial portions (110) extending radially outward from the flanges (24). Thus, the locator device (20) can support boreless rotatable members so that a tool (80) can be supported against the radial portions (110) of the rotatable member (100) to thereby form the rotatable member (100) to predetermined dimensions.