Abstract: A broach tool holding system (20) includes a pair of locator pins (46) rotatably mounted on a tool holder plate (36) to facilitate mounting and detachment of an associated broach tool (34). The broach tool (34) has a pair of locating openings (62) each of which has a locating hole (64) including round clearance surfaces (70) and round locating surfaces (72) that cooperate with the locator pins to provide the mounting in an accurately positioned location. The method of mounting the broach tool utilizing the rotatable locator pins (46) facilitates the mounting of the broach tool (34) with the locating holes that also facilitate the mounting and with securement being provided by clamps (74) for the broaching operation.