Cold forming remains an effective solution in terms of cost and time, especially in mass production. Indeed, this process has the advantage of being simpler to carry out than hot working techniques. High quality product, punching parameters like; punch-velocity, lubrication, punch and die material, punch die clearance and others should be investigated. The importance of this work arises essentially from punch-die clearance study in the case of a sheet metal having the same thickness as punch-diameter. This work focuses on the effect of one of punching parameters which is punch-die clearance. A traction machine was used as a press to satisfy this objective. A laboratory prototype mold was realized and then assembled on tensile machine to conduct experiments. In the present study, punching force evolution in case of punch displacement increase was presented at different clearances. Tool cold forming-die clearance of 0.35 mm had the least punching force.