Mechanical Jack problems of the 1996 Ford Taurus

I used my original jack to lift the vehicle to change the front, left tire. While lowering the vehicle, the jack suddenly gave out with the sound of stripping threads, and the car slammed to the ground. Fortunately, no part of my body was under the car, and the tire was in place. Identifying information on the faulty jack: where the crank meets the bolt: 5j 29 2 at the opposite end of the bolt: 00492 at the base of the jack: 2549 note: I was doing this in my garage, on a flat, concrete surface. The jack remained on its base the entire time - it did not tip over.

Consumer stated the jack collapsed during a tire change, while the vehicle was up on the jack joint in the jack, it separated causing it to fold foward, therefore causing the vehicle to fall pinning the consumers wrist between the fender and the top of the tire.